The normal value of calcitoninogen is about 0.1, but the test equipment varies from hospital to hospital, so consult your local hospital. In addition, the normal value of calcitonin is also different for different testing methods. The normal value of calcitoninogen is less than 0.5. Calcitoninogen reflects the active degree of systemic inflammation, and if the increase is serious, there may be a serious infection. In case of shock and systemic inflammatory syndrome, even if there is no bacterial infection, the normal value will be increased.