The level of C-reactive protein (CRP) increases when there's inflammation in your body. A simple blood test can be done to check your C-reactive protein level.

 C Reactive Protein

A high-sensitivity C-reactive protein (hs-CRP) test is more sensitive than a standard CRP test. That means the high-sensitivity test can detect slight increases within the normal range of standard CRP levels. The hs-CRP test can be used to determine your risk of developing coronary artery disease, a condition in which the arteries of your heart are narrowed. Coronary artery disease can lead to a heart attack.

Why it's done

Your doctor might order a CRP test to:

  • Check for inflammation due to an infection
  • Help diagnose a chronic inflammatory disease, such as rheumatoid arthritis or lupus
  • Determine your risk of heart disease
  • Evaluate your risk of a second heart attack