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

Why Is This Test Done?

Your doctor may order hs-CRP to monitor chronic conditions like heart disease, rheumatoid arthritis, or other inflammatory diseases. It can also be used to evaluate risk after a heart attack or stroke, or to guide treatment decisions for conditions like lupus or inflammatory bowel disease.

What Does a Result Mean?

Results are not given in absolute numbers but are compared to general reference ranges for healthy adults. 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.

How Is This Test Performed?

A blood sample is drawn from a vein, usually in your arm. The sample is then processed to separate serum or plasma, which is analyzed using a sensitive immunoassay method to measure hs-CRP levels.

What Are Common Causes of Abnormal Results?

Elevated hs-CRP levels can be caused by infections, injuries, certain medications, or underlying inflammatory conditions. Low levels may occur with no significant inflammation but can sometimes be seen in people with very low body fat or certain genetic factors.