6 H& f6 f9 w/ ]/ E1) 0 A2 u' e. X/ g6 B5 y: ghttp://www.webmd.com/a-to-z-guides/c-reactive-protein-crp, X! _& z N1 m' q% J& V( @& z
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A C-reactive protein (CRP) test is a blood test that measures the amount of a protein called C-reactive protein in your blood. C-reactive protein measures general levels of inflammation in your body.) f- U" n8 X0 J+ u$ z8 ]2 o2 ~
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High levels of CRP are caused by infections and many long-term diseases. But a CRP test cannot show where the inflammation is located or what is causing it. Other tests are needed to find the cause and location of the inflammation. ! X4 @6 h" @7 k3 X' }6 o0 |, h 8 q: A& G( l/ Q* `$ EWhy It Is Done ; g) x( M: N Y( V4 s9 O) p% }% p8 `/ y+ Q# r
A C-reactive protein (CRP) test is done to: 1 j9 g7 [" h: \+ v9 i& X
Check for infection after surgery. CRP levels normally rise within 2 to 6 hours of surgery and then go down by the third day after surgery. If CRP levels stay elevated 3 days after surgery, an infection may be present.
Identify and keep track of infections and diseases that cause inflammation, such as:2 A$ B9 j7 b9 T
Cancer of the lymph nodes (lymphoma). 3 p0 C8 x4 |" ^5 O" G8 YDiseases of the immune system, such as lupus. + J4 x, u, l# kPainful swelling of the blood vessels in the head and neck (giant cell arteritis).# q6 J8 Q$ a( D
Painful swelling of the tissues that line the joints (rheumatoid arthritis).% n1 W7 l! u# }3 p; `& O% A- _* r
Swelling and bleeding of the intestines (inflammatory bowel disease).5 U5 @3 ?" c& Z# Z
Infection of a bone (osteomyelitis). / m; y/ _. b6 z1 @- O4 v" D