C-reactive protein, serum (high-sensitivity)

Why Is This Test Done?

Your doctor may order this test to monitor chronic conditions like heart disease, arthritis, or to check for signs of infection, injury, or other inflammatory processes after surgery or trauma. It can also help assess how well treatments for inflammation are working.

What Does a High or Low Result Mean?

Elevated levels may indicate inflammation, infections, or conditions like rheumatoid arthritis or heart disease. Lower-than-normal results might suggest reduced inflammation, but they don’t always mean you’re healthy. Results depend on your overall health and medical history.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The blood is sent to a lab where it’s processed to separate serum. The test measures the protein using a sensitive method to detect even small amounts of inflammation.

What Are Common Causes of Abnormal Results?

High hs-CRP levels can be caused by infections, autoimmune diseases, heart problems, or recent injuries. Low levels may occur if inflammation is minimal, but they don’t rule out underlying issues. Other factors like age, diet, and medications can also affect results.