The instrument employs the photo-optical clot detection method. By
using a red light (660 nm) to illuminate the sample plasma/reagent mix-
ture, the instrument detects the changes in scattered light intensity due to
increased turbidity as Fibrinogen changes to Fibrin. The coagulation
curve is drawn by taking the time and the scattered light intensity as the
X and Y axis respectively. The coagulation time is determined by a per-
centage detection method