Outline how the following tests assess coagulation:
a) Prothrombin Time (PT)
b) Activated Partial Thromboplastin Time (APTT)
c) Activated Clotting Time (ACT)
d) Thromboelastogram (TEG or ROTEM)
It was expected candidates would cover all aspects of testing for each test listed. This would
include normal, abnormal or therapeutic values, a comment on methods (either laboratory or
point of care) and coagulation pathway assessment. General statements about the overall
purpose of the test, collection methods, plasma vs whole blood as sample scored additional
marks. Diagnoses or errors associated with abnormalities in each test would also have scored
marks but were not mentioned in most answers.
Overall there was a lack of depth of knowledge and incorrect facts. Many candidates knew about
TEG, but did not know details about the other tests.