CRP test is not advised for people on chronic steroid medication use. It is suggested that one should abstain from Nonsteroidal anti-inflammatory drugs (e.g. Aspirin, Advil, Motrin and Naproxin) and statins for 4 weeks, as it may reduce serum CRP levels. Any recent illness, tissue injury, infection, will raise the amount of CRP and give a falsely elevated estimate of risk.
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