A weak circulating anticoagulant that prolongs the APTT after incubation at 37°C for 1 hour is typical of:

Question

Quizplus · Accepted Answer

A prolonged APTT after incubation at 37°C for 1 hour is suggestive of a factor VIII inhibitor. It is important to note that a factor IX inhibitor can also cause a similar prolongation. However, this option is not listed in the answer choices. Factors VII and X inhibitors are not typically associated with a prolonged APTT after incubation at 37°C for 1 hour.

A Weak Circulating Anticoagulant That Prolongs the APTT After Incubation