C-reactive protein (high-sensitivity) concentration, serum/plasma

What Is hs-CRP Used For?

hs-CRP is primarily used to monitor chronic, low-level inflammation in the body. Doctors may order it to evaluate risk factors for cardiovascular disease, especially in people with no obvious symptoms of inflammation. It can also help assess the effectiveness of treatments for conditions like arthritis or other inflammatory diseases.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The blood is then processed to separate the serum or plasma, which is sent to a lab for analysis using a sensitive immunoassay method. The test measures the concentration of C-reactive protein, a marker of inflammation.

Why Might You Need This Test?

Your doctor may recommend an hs-CRP test if you have risk factors for heart disease, such as high blood pressure, diabetes, or a family history of heart problems. It may also be used in people with chronic conditions like rheumatoid arthritis or after a heart attack to monitor ongoing inflammation.

What Do Results Mean?

Results are reported in milligrams per liter (mg/L). Higher levels may indicate increased inflammation, which can be linked to higher risks for heart disease or other inflammatory conditions. However, results alone don’t diagnose a condition—they’re often used alongside other tests and clinical findings.