C-Reactive Protein, or CRP, is a substance produced by the liver in response to inflammation in the body. It is often measured through a blood test to help detect conditions that cause inflammation, such as infections or chronic diseases. High levels of CRP can indicate that something is wrong, prompting further investigation by healthcare providers. Doctors may use CRP levels to monitor the effectiveness of treatments or to assess the risk of heart disease. While CRP itself does not diagnose specific conditions, it serves as a useful marker for understanding overall health and inflammation in the body.