Procalcitonin (PCT) FIA

The Procalcitonin Fluoresence Immunoassay, is a critical diagnostic tool used primarily to differentiate between bacterial infections and non-bacterial inflammatory conditions. Its clinical utility lies in its rapid response; procalcitonin levels rise significantly within 3–6 hours of a systemic bacterial infection, far quicker than other markers like CRP. This makes it incredibly helpful for diagnosing sepsis early, monitoring the effectiveness of antibiotic therapy, and preventing antibiotic resistance by helping doctors decide when such medications are actually necessary versus when an infection is viral.