C-reactive protein (CRP) by nephelometry (high-sensitivity)

Why It’s Done

Your doctor may order this test to monitor chronic inflammation, evaluate risk for heart disease, or check for signs of conditions like rheumatoid arthritis or other autoimmune diseases. It’s sometimes used in research or follow-up for patients with known inflammatory conditions.

What to Expect

A small blood sample is taken from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause significant discomfort. The test is quick and doesn’t require special preparation beyond standard blood draw guidelines.

How It Works

The lab uses a specialized technique called nephelometry to detect and measure tiny amounts of CRP in your blood. This method is highly sensitive, allowing it to pick up very low levels of inflammation that other tests might miss.

What the Results Mean

Results are reported in milligrams per liter (mg/L). Higher levels may indicate ongoing inflammation, while lower levels suggest reduced inflammation. Your doctor will interpret results in the context of your overall health and medical history.