PCT as an Indicator for Infection Diagnosis PCT (procalcitonin), as the propeptide of calcitonin (CT), is a glycoprotein consisting of 116 amino acids, with a molecular weight of about 14.5 kDa. Structurally, it can be divided into three parts: the amino terminal, the immature calcitonin and the calcitonin carboxy-terminal peptide. In normal physiological conditions, it is secreted by thyro...
