We know that C-reactive protein is produced by the liver as a response to any inflammation in the body. CRP is a non-specific indicator that is the most sensitive acute phase reactant. It gets released into the body within a few hours of an injury or infection or any inflammation.
When the blood samples are collected, it becomes easy for the doctors to understand the risk of inflammation in the body as the CRP levels increase. In a healthy human, the CRP level should be below 3 mg/L.