Coagulation Testing- aPTT
activated Partial Thromboplastin Time assay
(aPTT):
Pathways
measured:
Clotting
factors monitored:
Clotting factors not monitored that are in these pathways:
Intrinsic pathway
Common pathway
XII, XI, IX, VIII, X, V, I, II
XIII
Why
this one is not measured:
XIII
Instrument detects fibrin monomer formation and
stops