C-reactive protein (CRP) by nephelometry

Why CRP Matters in Your Health

CRP is often used to monitor conditions like arthritis, heart disease, or infections. High levels may signal inflammation, which can be linked to conditions like autoimmune diseases or chronic illnesses. It’s also sometimes checked after surgery or injury to see how your body is healing.

How the Test Works

Your blood sample is analyzed using a method called nephelometry, which detects the amount of CRP in your plasma. This test doesn’t require fasting and is typically done as part of a routine checkup or to investigate symptoms like fever, fatigue, or joint pain.

What to Expect Before the Test

No special preparation is needed for this test. You can eat, drink, or take medications as usual. The blood is drawn from a vein, usually in your arm, and the process is quick and usually painless.

Possible Results and Next Steps

Results may be interpreted by your healthcare provider based on your overall health and symptoms. Very high CRP levels might prompt further testing, such as blood cultures or imaging, to find the cause of inflammation. Very low levels might raise questions about underlying conditions that need investigation.