Plasma Creatinine Concentration (Mass Concentration)

Why This Test Matters

Creatinine is a byproduct of muscle breakdown and is normally filtered out by your kidneys. High levels can indicate kidney problems, while low levels might suggest dehydration or muscle loss. This test is often used alongside other kidney function tests to monitor overall kidney health.

What to Expect Before the Test

You’ll typically have a small tube inserted into a vein in your arm. Blood will be drawn into a test tube. No special preparation is needed, but inform your doctor about any medications or recent illnesses, as they may affect results.

How the Test Works

Your blood sample is sent to a lab where it is analyzed to measure creatinine levels. The test uses a method called **nephelometry** or **enzymatic assay** to detect and quantify creatinine concentration.

Common Causes of Abnormal Results

Elevated creatinine levels may signal impaired kidney function, dehydration, or conditions like heart failure or muscle disorders. Low levels could indicate dehydration, severe muscle wasting, or liver disease. Always discuss results with your healthcare provider.