{"id":3872,"date":"2026-07-06T06:24:49","date_gmt":"2026-07-06T06:24:49","guid":{"rendered":"https:\/\/berkanresorlu.com.tr\/?p=3872"},"modified":"2026-10-13T16:07:17","modified_gmt":"2026-10-13T16:07:17","slug":"kidney-function-tests","status":"publish","type":"post","link":"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/","title":{"rendered":"Kidney Function Tests: Types, Normal Values, and Results"},"content":{"rendered":"<p>Kidney function tests are biochemical blood and urine analyses that measure the kidneys&#8217; blood filtration rate, detect the pressure exerted on the organs by possible urinary tract obstructions, and guide urological surgical decisions. Through these laboratory tests used during clinical evaluation processes, the current severity of diseases can be determined and the safest treatment algorithms can be established. Determining the kidney&#8217;s current functional reserve before surgery is critically important both for planning the timing of the intervention and for predicting the organ&#8217;s recovery process after the operation. Reaching an accurate diagnosis and initiating timely treatment are largely shaped by the meticulous clinical evaluation of these laboratory findings.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #ffffff;color:#ffffff\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #ffffff;color:#ffffff\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#How_Do_Kidney_Function_Tests_Help_Us_Understand_How_Our_Body_Works\" >How Do Kidney Function Tests Help Us Understand How Our Body Works?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#What_Are_the_Effects_of_Urinary_Tract_Obstruction_on_Kidney_Function_Tests\" >What Are the Effects of Urinary Tract Obstruction on Kidney Function Tests?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#How_Do_Enlarged_Prostate_or_Bladder_Problems_Affect_Kidney_Function_Test_Results\" >How Do Enlarged Prostate or Bladder Problems Affect Kidney Function Test Results?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Why_Are_Kidney_Function_Tests_Critically_Important_in_Infants_and_Children\" >Why Are Kidney Function Tests Critically Important in Infants and Children?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Which_Basic_Laboratory_Tests_Are_Included_in_Kidney_Function_Tests\" >Which Basic Laboratory Tests Are Included in Kidney Function Tests?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#What_Clues_Do_Blood_and_Urine_Kidney_Function_Tests_Provide\" >What Clues Do Blood and Urine Kidney Function Tests Provide?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Why_Should_Kidney_Function_Tests_Be_Evaluated_Before_Kidney_Stone_Surgery\" >Why Should Kidney Function Tests Be Evaluated Before Kidney Stone Surgery?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#How_Are_Kidney_Function_Tests_Monitored_During_Shock_Wave_Lithotripsy_ESWL\" >How Are Kidney Function Tests Monitored During Shock Wave Lithotripsy (ESWL)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Why_Are_Kidney_Function_Tests_Evaluated_More_Carefully_in_Individuals_with_a_Solitary_Kidney\" >Why Are Kidney Function Tests Evaluated More Carefully in Individuals with a Solitary Kidney?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Which_Emergency_Interventions_Are_Applied_According_to_Kidney_Function_Test_Results_in_Acute_Obstruction\" >Which Emergency Interventions Are Applied According to Kidney Function Test Results in Acute Obstruction?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#What_Do_Kidney_Function_Tests_Tell_Us_During_Recovery_After_Relief_of_an_Obstruction\" >What Do Kidney Function Tests Tell Us During Recovery After Relief of an Obstruction?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Why_Should_Kidney_Function_Tests_Not_Be_Overlooked_When_Planning_Prostate_Treatment_in_Older_Adults\" >Why Should Kidney Function Tests Not Be Overlooked When Planning Prostate Treatment in Older Adults?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/berkanresorlu.com.tr\/en\/kidney-function-tests\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"How_Do_Kidney_Function_Tests_Help_Us_Understand_How_Our_Body_Works\"><\/span>How Do Kidney Function Tests Help Us Understand How Our Body Works?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Our kidneys are like highly advanced purification plants that work quietly in the background of the body, filtering harmful substances from the blood to keep us healthy. This purification process occurs through a highly dynamic cycle in which blood passes through microscopic filters, minerals that are still beneficial to the body are reabsorbed, and the remaining waste products are secreted into the urinary collecting system. In a healthy person, this process continues uninterrupted. Kidney function tests are the windows that allow us to understand how efficiently this dynamic filtration and reabsorption cycle is functioning.<\/p>\n<p>Any slowdown in this filtration system becomes apparent through an increase in certain waste products in the blood. Evaluating whether the kidneys are maintaining their functions properly is a critical step in diagnosing and planning the treatment of diseases affecting the urinary tract. Determining whether there is a problem in this process generally helps prevent permanent changes in kidney tissue when detected at an early stage.<\/p>\n<p>Some of the primary functions of the kidneys are as follows:<\/p>\n<ul>\n<li>Filtering the blood<\/li>\n<li>Maintaining mineral balance<\/li>\n<li>Removing harmful waste products<\/li>\n<li>Reabsorbing water<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_Are_the_Effects_of_Urinary_Tract_Obstruction_on_Kidney_Function_Tests\"><\/span>What Are the Effects of Urinary Tract Obstruction on Kidney Function Tests?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The long, thin tubes that carry urine from the kidneys to the bladder are called ureters. When a stone becomes lodged in these tubes or they are blocked by another mass, the downward flow of urine slows or stops completely. In such a blockage, the kidneys activate defense mechanisms that change as the hours pass. During the early stages of obstruction, the pressure of urine accumulating in the renal pelvis increases. In response, the kidney attempts to pump more blood to the area by dilating its own blood vessels. However, as the pressure continues to rise, this effort becomes insufficient, and the filtration process begins to slow.<\/p>\n<p>In the following hours, the kidney responds in the opposite way by constricting its blood vessels to protect itself from further damage. Blood flow to the kidney gradually decreases. If the obstruction persists for days or weeks, this vascular constriction becomes chronic, and the kidney tissue begins to thin because it cannot receive enough oxygen. The swelling that develops inside the kidney because urine cannot pass places serious pressure on the tissue. This process is reflected in blood tests, causing abnormal laboratory values. Prompt removal of the obstruction greatly supports the preservation of the organ&#8217;s structure.<\/p>\n<p>Common findings associated with urinary tract obstruction include:<\/p>\n<ul>\n<li>Severe flank pain<\/li>\n<li>Recurrent infections<\/li>\n<li>Fever<\/li>\n<li>Reduced urine output<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"How_Do_Enlarged_Prostate_or_Bladder_Problems_Affect_Kidney_Function_Test_Results\"><\/span>How Do Enlarged Prostate or Bladder Problems Affect Kidney Function Test Results?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Obstructions do not always have to occur in the channels directly below the kidneys. Sometimes the problem begins much lower in the urinary tract, in the urinary bladder or, in men, at the level of the prostate. Benign enlargement of the prostate, which is especially common in older men, narrows the bladder outlet and makes urination difficult. Initially, the bladder responds to this challenge by thickening its muscular wall, much like the muscles of an athlete who constantly lifts heavy weights.<\/p>\n<p>During this stage of thickening, patients begin experiencing frequent urination. However, if the obstruction persists, the bladder gradually becomes fatigued. Connective tissue fills the spaces between muscle fibers, causing the bladder to lose its elasticity. In the final stage, the bladder largely loses its ability to contract, leaving a significant amount of urine inside even after urination. This continuously retained urine creates backward pressure through the urinary tract toward the kidneys. This backward pressure wave strains the kidneys and reduces their filtration capacity. Therefore, lower urinary tract problems such as an enlarged prostate may eventually produce signs of kidney impairment in laboratory tests.<\/p>\n<p>Signs suggesting weakened bladder function include:<\/p>\n<ul>\n<li>Frequent urination<\/li>\n<li>Sudden urgency<\/li>\n<li>Residual urine in the bladder<\/li>\n<li>Slower urinary flow<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Why_Are_Kidney_Function_Tests_Critically_Important_in_Infants_and_Children\"><\/span>Why Are Kidney Function Tests Critically Important in Infants and Children?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The monitoring of congenital urinary tract obstructions in infants and children begins while the baby is still in the womb. During prenatal ultrasound examinations, the level of amniotic fluid that supports fetal development is extremely important. A reduction in this fluid, marked dilation of the renal pelvis, or signs that the only functioning kidney is under stress in babies with a solitary kidney are highly significant findings.<\/p>\n<p>Within the first few days after birth, babies with such suspected conditions should undergo urgent evaluation with detailed imaging methods. When necessary, nuclear imaging tests calculate the functional capacity of the kidneys as percentages. If the affected kidney&#8217;s functional capacity falls below certain limits, tissue damage is considered to have begun. Early intervention during this period significantly reduces the risk of serious conditions such as kidney failure later in the child&#8217;s life. Early detection is the most valuable step in protecting developing tissues.<\/p>\n<p>Some important findings monitored before and after birth include:<\/p>\n<ul>\n<li>Reduced amniotic fluid<\/li>\n<li>Dilation of the renal pelvis<\/li>\n<li>Structural abnormalities of the urinary tract<\/li>\n<li>Presence of a solitary kidney<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Which_Basic_Laboratory_Tests_Are_Included_in_Kidney_Function_Tests\"><\/span>Which Basic Laboratory Tests Are Included in Kidney Function Tests?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Various blood and urine tests are used to understand the internal condition of our kidneys. These tests are indispensable for determining surgical risks before an operation, adjusting medication dosages, and predicting the course of a disease. One of the primary blood test parameters is creatinine. Creatinine is a metabolic waste product produced during the daily activity of skeletal muscles and is removed from the blood solely through the kidneys. When the kidneys&#8217; filtration capacity slows, creatinine cannot be eliminated from the body and begins to accumulate in the bloodstream.<\/p>\n<p>Another important parameter is blood urea nitrogen (BUN). Urea, which is produced during the digestion and breakdown of proteins, tends to reach elevated levels in the blood when the body becomes dehydrated or when there is a urinary tract obstruction. In urine analysis, the specific gravity, which measures urine concentration, is evaluated. While healthy kidneys can adjust the amount of water in urine according to the body&#8217;s needs and concentrate the urine, damaged kidneys lose this ability and begin producing urine with a fixed concentration. All these basic tests are evaluated together to form an overall picture of health.<\/p>\n<p>The primary blood parameters evaluated include:<\/p>\n<ul>\n<li>Serum creatinine<\/li>\n<li>Blood urea nitrogen (BUN)<\/li>\n<li>Sodium<\/li>\n<li>Potassium<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_Clues_Do_Blood_and_Urine_Kidney_Function_Tests_Provide\"><\/span>What Clues Do Blood and Urine Kidney Function Tests Provide?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Looking only at the creatinine value in blood tests may sometimes produce misleading results. This is because the kidneys can compensate with their remaining healthy tissue until nearly half of their tissue has been damaged, thereby maintaining creatinine levels within the normal range. Therefore, the estimated glomerular filtration rate (eGFR), calculated by considering the patient&#8217;s age, sex, and muscle mass, is a much more sensitive indicator. A decline in this value signals that kidney health may be at risk even before major symptoms appear.<\/p>\n<p>In addition, microscopic examination of urine, although simple and effortless for the patient, provides extremely valuable information. Crystals observed in the urine provide clues about the patient&#8217;s tendency to form stones and the possible type of stone. Crystals formed in acidic environments are entirely different from those formed in alkaline environments, and this distinction helps determine how the patient&#8217;s diet should be adjusted. Detection of proteins such as albumin, which should not normally be excreted in the urine, is one of the earliest indicators of microscopic damage to the kidney&#8217;s filtration structures.<\/p>\n<p>The main elements sought in urine analysis include:<\/p>\n<ul>\n<li>Uric acid crystals<\/li>\n<li>Calcium oxalate crystals<\/li>\n<li>Protein leakage<\/li>\n<li>Glucose<\/li>\n<li>Red blood cells<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Why_Should_Kidney_Function_Tests_Be_Evaluated_Before_Kidney_Stone_Surgery\"><\/span>Why Should Kidney Function Tests Be Evaluated Before Kidney Stone Surgery?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Laser lithotripsy performed through thin endoscopic instruments is frequently used to treat stones located in the urinary tract or directly within the kidney&#8217;s collecting system. However, before planning such surgical procedures, it is extremely important to know the kidney&#8217;s current functional status. Although performing these procedures on kidneys with weakened filtration capacity raises certain concerns, relieving the obstruction is the most fundamental requirement for allowing the organ to recover.<\/p>\n<p>Clinical evaluations show that after these delicate endoscopic stone surgeries are performed in patients with obstructed kidneys, blood and urine tests begin to demonstrate a noticeable trend toward recovery. By fragmenting the stone with laser energy and temporarily supporting urine flow with a ureteral stent, the kidney is relieved of the heavy pressure caused by retained urine. Younger patient age, absence of obesity, and preoperative filtration values above a certain threshold are considered among the factors that significantly increase the likelihood of kidney recovery after surgery.<\/p>\n<p>The laboratory tests carefully evaluated before surgery include:<\/p>\n<ul>\n<li>Complete blood count<\/li>\n<li>Electrolyte levels<\/li>\n<li>Complete urinalysis<\/li>\n<li>Urine culture<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"How_Are_Kidney_Function_Tests_Monitored_During_Shock_Wave_Lithotripsy_ESWL\"><\/span>How Are Kidney Function Tests Monitored During Shock Wave Lithotripsy (ESWL)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Extracorporeal shock wave lithotripsy (ESWL), which uses shock waves generated outside the body to fragment stones, is a highly practical and frequently preferred treatment for suitable patients. However, before deciding on this method, the patient&#8217;s kidney function must be thoroughly evaluated. While the shock waves strike the targeted stone, they may also create mild vibrations in the surrounding kidney tissue. In addition, as fragmented stone pieces enter the urinary tract, they may temporarily obstruct urine flow.<\/p>\n<p>For this reason, creatinine and urea levels in the blood are closely monitored before each shock wave session and between treatment sessions to determine how well the kidneys tolerate the process. If detailed imaging studies show that the kidney tissue has completely deteriorated and is no longer filtering blood, applying shock wave therapy to that kidney provides no benefit. In fact, such non-functioning kidneys may eventually become a source of recurrent infections or hypertension. In such cases, complete removal of the kidney may be considered based on specialist evaluation.<\/p>\n<p>Some conditions that may be observed during ESWL sessions include:<\/p>\n<ul>\n<li>Temporary urinary tract obstruction<\/li>\n<li>Mild bleeding within the tissue<\/li>\n<li>Pain caused by passing stone fragments<\/li>\n<li>Changes in urine color<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Why_Are_Kidney_Function_Tests_Evaluated_More_Carefully_in_Individuals_with_a_Solitary_Kidney\"><\/span>Why Are Kidney Function Tests Evaluated More Carefully in Individuals with a Solitary Kidney?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Many people are born with only one kidney or lose one kidney during their lifetime. Thanks to the body&#8217;s adaptive mechanisms, the remaining kidney gradually enlarges its capacity and can largely assume the workload normally shared by two kidneys. As a result, the individual can live a completely healthy life. However, the approach to urinary tract diseases in people with a solitary kidney is much more urgent and different than in individuals with two kidneys.<\/p>\n<p>This is because if a stone obstruction or severe infection develops in the only functioning kidney, there is no backup organ to compensate, and blood values may begin deteriorating within hours. Harmful waste products rapidly accumulate. In such situations, urine analysis, mineral levels, and blood tests must be monitored more frequently and meticulously than usual. If necessary, temporary catheters are used to quickly relieve the pressure inside the solitary kidney. In this way, efforts are made to prevent damage to the only functioning organ.<\/p>\n<p>Some situations involving a solitary kidney include:<\/p>\n<ul>\n<li>Pelvic kidney<\/li>\n<li>Crossed ureter anomaly<\/li>\n<li>Renal agenesis<\/li>\n<li>Surgically removed kidney<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Which_Emergency_Interventions_Are_Applied_According_to_Kidney_Function_Test_Results_in_Acute_Obstruction\"><\/span>Which Emergency Interventions Are Applied According to Kidney Function Test Results in Acute Obstruction?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When kidney values deteriorate very rapidly within days or even hours, this condition is referred to as acute kidney injury. If the source of the problem is an acute urinary tract obstruction, the increasing pressure inside the kidney quickly begins to damage and intoxicate the organ. At this stage, urine flow must be urgently restored to halt the deterioration seen in laboratory tests and protect kidney cells. Two primary methods are widely used and highly effective.<\/p>\n<p>The first method involves placing a temporary internal ureteral stent (Double J Stent) through the urinary tract using thin endoscopic instruments until it reaches the kidney. The second method is percutaneous nephrostomy, in which a thin drainage tube is inserted directly into the kidney through the patient&#8217;s back under ultrasound guidance. Stent placement may be preferred in younger patients who are suitable for surgery, whereas nephrostomy performed through the back may play a life-saving role in elderly patients with bilateral obstruction whose blood values are too poor to tolerate anesthesia. Both methods help relieve the kidney as soon as urine flow is restored.<\/p>\n<p>The emergency interventions commonly preferred include:<\/p>\n<ul>\n<li>Ureteral stent placement<\/li>\n<li>Percutaneous nephrostomy<\/li>\n<li>Catheterization procedures<\/li>\n<li>Abscess drainage<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_Do_Kidney_Function_Tests_Tell_Us_During_Recovery_After_Relief_of_an_Obstruction\"><\/span>What Do Kidney Function Tests Tell Us During Recovery After Relief of an Obstruction?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When a kidney obstruction is successfully relieved, the patient enters a different stage that requires very careful management. Kidneys that have been under prolonged pressure and unable to perform their function properly tend to eliminate the excess water and waste products accumulated in the body at an extraordinary rate once the obstruction is suddenly removed. This condition is medically referred to as post-obstructive diuresis. Patients may produce several liters of urine within a matter of hours.<\/p>\n<p>Although this is a positive sign indicating that the kidneys have reopened, such intense fluid loss may suddenly leave the patient dehydrated, causing blood pressure to fall to very low levels. At the same time, essential minerals are rapidly lost from the body through the urine. During this period, frequent monitoring of blood mineral levels and replacement of lost fluids through intravenous infusions are extremely important. While regular fluid replacement helps maintain the patient&#8217;s balance, laboratory tests confirm that the kidney is returning to its normal functional rhythm.<\/p>\n<p>The minerals routinely monitored during this period include:<\/p>\n<ul>\n<li>Sodium<\/li>\n<li>Potassium<\/li>\n<li>Chloride<\/li>\n<li>Magnesium<\/li>\n<li>Phosphorus<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Why_Should_Kidney_Function_Tests_Not_Be_Overlooked_When_Planning_Prostate_Treatment_in_Older_Adults\"><\/span>Why Should Kidney Function Tests Not Be Overlooked When Planning Prostate Treatment in Older Adults?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Benign enlargement of the prostate is a common condition affecting quality of life in a significant proportion of older men. Beyond making urination difficult by compressing the urinary channel, this enlargement may gradually weaken bladder emptying and create a chain of problems that silently extend to the kidneys. When these patients are evaluated for treatment, attention is not limited solely to the prostate; kidney function values must also be assessed to ensure they remain within healthy ranges.<\/p>\n<p>If impairment is detected, specific medications that relax the muscles or aim to reduce prostate volume are prescribed to improve urine flow. These treatments reduce the burden on the bladder and help prevent the backward pressure transmitted to the kidneys. Before initiating prostate treatment, prostate-specific blood tests should be performed, and the presence of possible urinary tract infection should be investigated through urine culture. In simple urinary findings that do not cause symptoms, unnecessary intensive medication should be avoided, and the patient&#8217;s overall system should be protected as a whole.<\/p>\n<p>The medication groups commonly used in prostate treatment include:<\/p>\n<ul>\n<li>Alpha blockers<\/li>\n<li>Enzyme inhibitors<\/li>\n<li>Antimuscarinics<\/li>\n<li>Combination therapies<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"accordion\">\n\t<div id=\"accordion-3587081203\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3587081203-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-are-kidney-function-tests-and-why-are-they-performed?\" aria-expanded=\"false\" aria-controls=\"accordion-3587081203-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What are Kidney Function Tests and why are they performed?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3587081203-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3587081203-label\">\n\t\t\t\n<p>Kidney function tests are blood and urine tests that evaluate the kidneys&#8217; ability to filter blood and remove waste products. They play an important role in the diagnosis, monitoring, and treatment planning of kidney diseases.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-4095123857\" class=\"accordion-item\">\n\t\t<a id=\"accordion-4095123857-label\" class=\"accordion-title plain\" href=\"#accordion-item-which-tests-are-included-in-kidney-function-tests?\" aria-expanded=\"false\" aria-controls=\"accordion-4095123857-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Which tests are included in Kidney Function Tests?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-4095123857-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-4095123857-label\">\n\t\t\t\n<p>This evaluation generally includes creatinine, blood urea nitrogen (BUN), eGFR, electrolytes, complete urinalysis, urine protein measurement, and, when necessary, tests such as creatinine clearance. The requested tests may vary depending on the patient&#8217;s condition.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-2112687859\" class=\"accordion-item\">\n\t\t<a id=\"accordion-2112687859-label\" class=\"accordion-title plain\" href=\"#accordion-item-in-which-situations-are-kidney-function-tests-requested?\" aria-expanded=\"false\" aria-controls=\"accordion-2112687859-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>In which situations are Kidney Function Tests requested?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-2112687859-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-2112687859-label\">\n\t\t\t\n<p>They may be requested in cases of hypertension, diabetes, blood or protein in the urine, kidney stones, suspected chronic kidney disease, edema, changes in urine output, and monitoring of medications that may affect kidney function.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-2538160484\" class=\"accordion-item\">\n\t\t<a id=\"accordion-2538160484-label\" class=\"accordion-title plain\" href=\"#accordion-item-is-fasting-required-before-kidney-function-tests?\" aria-expanded=\"false\" aria-controls=\"accordion-2538160484-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Is fasting required before Kidney Function Tests?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-2538160484-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-2538160484-label\">\n\t\t\t\n<p>Fasting is not required for most kidney function tests. However, if additional biochemical analyses are planned together with these tests, the physician or laboratory may recommend fasting or special preparation.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3368635952\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3368635952-label\" class=\"accordion-title plain\" href=\"#accordion-item-what-may-elevated-creatinine-levels-in-kidney-function-tests-indicate?\" aria-expanded=\"false\" aria-controls=\"accordion-3368635952-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>What may elevated creatinine levels in Kidney Function Tests indicate?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3368635952-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3368635952-label\">\n\t\t\t\n<p>Elevated creatinine may suggest reduced kidney filtration function. However, muscle mass, hydration status, and certain medications may also influence the results. The findings should always be evaluated by a physician.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3021494454\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3021494454-label\" class=\"accordion-title plain\" href=\"#accordion-item-why-is-egfr-important-in-kidney-function-test-results?\" aria-expanded=\"false\" aria-controls=\"accordion-3021494454-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Why is eGFR important in Kidney Function Test results?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3021494454-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3021494454-label\">\n\t\t\t\n<p>eGFR is an important calculation that reflects the kidneys&#8217; filtration capacity. A low eGFR value may help assess the possibility of chronic kidney disease or reduced kidney function.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-81553632\" class=\"accordion-item\">\n\t\t<a id=\"accordion-81553632-label\" class=\"accordion-title plain\" href=\"#accordion-item-can-kidney-function-tests-detect-kidney-disease-at-an-early-stage?\" aria-expanded=\"false\" aria-controls=\"accordion-81553632-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Can Kidney Function Tests detect kidney disease at an early stage?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-81553632-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-81553632-label\">\n\t\t\t\n<p>Yes. Regular kidney function testing may help detect kidney damage at an early stage, especially in individuals with risk factors such as diabetes and hypertension.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-802353348\" class=\"accordion-item\">\n\t\t<a id=\"accordion-802353348-label\" class=\"accordion-title plain\" href=\"#accordion-item-which-factors-affect-kidney-function-test-results?\" aria-expanded=\"false\" aria-controls=\"accordion-802353348-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Which factors affect Kidney Function Test results?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-802353348-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-802353348-label\">\n\t\t\t\n<p>Insufficient fluid intake, intense exercise, muscle mass, certain medications, pregnancy, and existing chronic diseases may affect test results. Therefore, the results should be interpreted together with clinical findings.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-1361118656\" class=\"accordion-item\">\n\t\t<a id=\"accordion-1361118656-label\" class=\"accordion-title plain\" href=\"#accordion-item-how-often-should-kidney-function-tests-be-performed?\" aria-expanded=\"false\" aria-controls=\"accordion-1361118656-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>How often should Kidney Function Tests be performed?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-1361118656-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-1361118656-label\">\n\t\t\t\n<p>The frequency of testing depends on the person&#8217;s age, health status, and risk factors. In people with diabetes, hypertension, or chronic kidney disease, regular testing according to the physician&#8217;s recommendation is advised.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n\t<div id=\"accordion-3798332692\" class=\"accordion-item\">\n\t\t<a id=\"accordion-3798332692-label\" class=\"accordion-title plain\" href=\"#accordion-item-which-specialist-should-be-consulted-for-kidney-function-tests?\" aria-expanded=\"false\" aria-controls=\"accordion-3798332692-content\">\n\t\t\t<button class=\"toggle\" aria-label=\"Toggle\"><i class=\"icon-angle-down\" aria-hidden=\"true\"><\/i><\/button>\n\t\t\t<span>Which specialist should be consulted for Kidney Function Tests?<\/span>\n\t\t<\/a>\n\t\t<div id=\"accordion-3798332692-content\" class=\"accordion-inner\" aria-labelledby=\"accordion-3798332692-label\">\n\t\t\t\n<p>Individuals requiring evaluation of kidney function may consult a family physician, internal medicine specialist, nephrologist, or urologist. Test results should always be interpreted by a physician together with the clinical findings.<\/p>\n\t\t<\/div>\n\t<\/div>\n\t\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kidney function tests are biochemical blood and urine analyses that measure the kidneys&#8217; blood filtration rate, detect the pressure exerted on the organs by possible urinary tract obstructions, and guide urological surgical decisions. Through these laboratory tests used during clinical evaluation processes, the current severity of diseases can be determined and the safest treatment algorithms [&#8230;]\n","protected":false},"author":1,"featured_media":3865,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-3872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/posts\/3872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/comments?post=3872"}],"version-history":[{"count":3,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/posts\/3872\/revisions"}],"predecessor-version":[{"id":5129,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/posts\/3872\/revisions\/5129"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/media\/3865"}],"wp:attachment":[{"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/media?parent=3872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/categories?post=3872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/berkanresorlu.com.tr\/en\/wp-json\/wp\/v2\/tags?post=3872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}