Serum Creatinine Concentration (Mass Concentration)

Why This Test Matters

Creatinine is a byproduct of muscle breakdown and is naturally filtered out of your blood by your kidneys. If your kidneys aren’t working well, creatinine builds up in your blood. This test helps doctors monitor kidney health, especially in people with diabetes, high blood pressure, or other conditions that can affect the kidneys.

What to Expect Before the Test

No special preparation is needed for this test. You’ll have a small needle inserted into your arm to draw a blood sample. It usually takes a few minutes, and you can resume normal activities afterward. Avoid strenuous exercise or eating heavy meals before the test to ensure accurate results.

What the Results Mean

Your results will show the concentration of creatinine in your blood. Higher levels may indicate reduced kidney function, while lower levels might suggest dehydration or muscle loss. Your doctor will interpret these results in relation to your overall health and other tests.

Common Causes of Abnormal Results

Creatinine levels can be affected by factors like dehydration, muscle mass, diet, and kidney disease. For example, dehydration can raise creatinine levels, while muscle disorders or eating a high-protein diet might lower them. Your doctor will consider these factors when reviewing your results.