Understanding Kidney Function Test
A kidney function test is a blood or urine test that checks how well your kidneys are working. The kidneys remove waste products and excess fluid from the body. They also make hormones that control blood pressure, red blood cell production, and calcium levels.
Some common tests for kidney function include:
• Blood urea nitrogen (BUN) level
• Creatinine level
• Estimated Glomerular Filtration Rate (eGFR)
• Urinalysis
The main purpose of a kidney function test is to assess the level of creatinine and urea in the blood. These proteins are produced when muscle tissue is damaged, so their levels in the blood can be used to estimate how well the kidneys are filtering waste products from the blood.
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