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1) ! Q9 `% y# v, J/ W9 @1 whttp://www.webmd.com/a-to-z-guides/c-reactive-protein-crp ! A7 m* g4 G1 C( I8 s% P$ V。。。。。。 n2 c: M0 }; O9 R" T2 oA 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* l W9 L, l: n/ Z! z0 b3 |7 z" X* e F
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. 5 P1 G5 Y/ f/ X: h2 |9 N( W' X+ _4 R
Why It Is Done+ }- B' y5 z) h. P4 A
?7 C' \8 s x0 ?) x. lA C-reactive protein (CRP) test is done to:. P: ~ ^0 m6 o5 _& y; \, |
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: * }9 H* w' V, K) S( r1 KCancer of the lymph nodes (lymphoma). - U+ H" w7 f; L5 q* N! xDiseases of the immune system, such as lupus. 4 c; ~/ O- U" U' hPainful swelling of the blood vessels in the head and neck (giant cell arteritis). + ~5 I7 X7 n' rPainful swelling of the tissues that line the joints (rheumatoid arthritis).1 r2 f) ^# G; j$ F+ U, z+ \
Swelling and bleeding of the intestines (inflammatory bowel disease). ' C+ d2 i: T1 B. @- S! o8 x4 O4 I3 g, CInfection of a bone (osteomyelitis).0 } C- E; U# n9 C