Mass concentration of Creatinine in Serum

Why This Test Matters

Creatinine is a byproduct of muscle breakdown and is normally filtered out by your kidneys. High levels can indicate poor kidney function, while low levels might suggest overhydration or muscle wasting. This test is often used alongside other kidney function tests to diagnose and monitor conditions like chronic kidney disease.

What to Expect Before the Test

No special preparation is needed for this test. You may have a small needle inserted into your arm to draw blood. If you’re on a low-protein diet or have recently exercised, let your healthcare provider know, as these factors can temporarily affect creatinine levels.

How the Test Results Are Interpreted

Results are typically reported in milligrams per deciliter (mg/dL) or micromoles per liter (µmol/L). While reference ranges vary by lab, higher than expected levels may signal kidney issues, while very low levels could raise questions about hydration or muscle mass.

Common Conditions Monitored

This test is commonly used to monitor kidney function in conditions like diabetes, hypertension, or after exposure to certain medications or toxins. It’s also part of routine check-ups for people at higher risk of kidney problems.