26/04/2022
C-Reactive Protein (Blood)
Does this test have other names?
CRP
What is this test?
The C-reactive protein (CRP) test is used to find inflammation in your body. Inflammation could be caused by different types of conditions, such as an infection or autoimmune disorders like rheumatoid arthritis or inflammatory bowel disease. This test measures the amount of CRP in your blood. CRP is a protein made by the liver and sent into the bloodstream. Blood levels may be higher when you have inflammation or an infection. Because CRP levels often go up before you have symptoms of pain or fever and drop down as you recover, the CRP test is especially useful for tracking infections.
Because CRP is part of the immune system, your levels of it rise whenever you have inflammation in your body. But the test doesn't show where the inflammation is or what is causing it.
A high-sensitivity CRP test (hs-CRP) may be used to measure your heart disease risk even if you seem healthy. It can find much smaller changes in CRP levels than the regular CRP test.
Why do I need this test?
You may need this test if your healthcare provider thinks you have an infection. For example, it may be osteomyelitis, which involves bone. Or it may be a potentially life-threatening condition called sepsis or blood poisoning.
Symptoms of sepsis may include fever and chills, headache, pain, nausea, vomiting, confusion, rash, and shortness of breath. The level of CRP in your blood goes up within a few hours of a serious infection. CRP levels can also rise when you have a viral infection. But they don’t go as high as during a bacterial infection.
Your provider may also order the test if he or she thinks you have an inflammatory condition or an autoimmune disease, such as rheumatoid art