C-reactive protein (CRP) by nephelometry

Why Is This Test Done?

Your doctor may order a CRP test to check for signs of inflammation in your body. This could be due to infections (like pneumonia or urinary tract infections), injuries, or certain medical conditions such as rheumatoid arthritis or heart disease. It can also help monitor how well treatments are working for these conditions.

What to Expect Before the Test

You won’t need any special preparation for this test. It’s usually done by drawing blood from a vein in your arm. The process is quick and generally painless, though you might feel a slight pinch. If you’re on blood thinners, let your doctor know before the test.

What the Results Mean

CRP levels can vary widely depending on your health and medical history. Higher levels often indicate inflammation, while lower levels suggest minimal or no inflammation. Your doctor will interpret the results in the context of your overall health and symptoms.

Common Conditions Monitored

CRP is commonly used to track conditions like infections, autoimmune diseases (such as lupus or rheumatoid arthritis), and heart disease. It can also help evaluate responses to treatments or identify flare-ups of chronic conditions.