What level of C-reactive protein indicates infection?

Levels between 10 mg/L and 100 mg/L are moderately elevated and are usually due to more significant inflammation from an infectious or non-infectious cause. Levels above 100 mg/L are severely elevated and almost always a sign of severe bacterial infection.

What is a normal C-reactive protein score?

CRP is measured in milligrams per liter (mg/L). Results for a standard CRP test are usually given as follows: Normal: Less than 10 mg/L. High: Equal to or greater than 10 mg/L.

What happens when C-reactive protein is high?

A high level of CRP in the blood can be a marker of inflammation. A wide variety of conditions can cause it, from an infection to cancer. High CRP levels can also indicate that there’s inflammation in the arteries of the heart, which can mean a higher risk of heart attack.

What does a C-reactive protein level of 17 mean?

Indeed, serial CRP levels in trauma patients aid in the discrimination of bacterial sepsis from noninfectious systemic inflammatory response syndrome. A cutoff value of 17 mg/dL or more for CRP gives a sensitivity of 74% and a specificity of 75% in predicting the presence of infection.

Is CRP 108 high?

Predictors of deep infection foci The optimal CRP cut-off value for screening a deep infection focus was 108 mg/L at day 1 with sensitivity of 77% and specificity of 60%, 44 mg/L at day 7 with sensitivity of 68% and specificity of 67%, and 22 mg/L at day 14 with sensitivity of 59% and specificity of 76%.

Is a CRP of 5.6 high?

When using CRP to evaluate infection, inflammation or tissue injury, a CRP level less than 5 mg/L is considered negative and a value greater than 10 mg/L is considered positive. The upper limit of quantification is approximately 500 mg/L.

What does a CRP of 16 mean?

Generally, a CRP level under 10 milligrams per liter (mg/L) is considered normal. If the level of CRP in your blood is higher than that, it may mean your body is having an inflammatory reaction to something. More tests will be needed to figure out what’s causing the inflammation.