Typically, an ultrasensitive c-reactive protein of 15 mg/dL is not normal. Ultrasensitive c-reactive protein is a non-specific marker synthesized by the liver for the acute phase of the systemic inflammatory response. Because it is not directly affected by anti-inflammatory drugs and immunosuppressive drugs, it is one of the preferred criteria for the observation of the degree of tissue damage and the effect of treatment, and has diagnostic significance for the examination of cardiovascular disease. When patients have rheumatism, tissue damage, myocardial infarction, surgical trauma, various acute or chronic infections, etc., c-reactive protein will rise rapidly, and then fall to normal when the condition improves. As the standard value of the instrument used by each hospital is not exactly the same, usually less than 8mg/dL, but when the value of ultrasensitive c-reactive protein is 15mg/dL, it suggests that the patient’s ultrasensitive C-reactive protein is on the high side, which needs to be combined with their own clinical symptoms to go to the hospital for further examination. After clarifying the cause of the disease, targeted treatment is carried out.