Effect of some preanalytical variables on some screening tests of coagulation

Preanalytical circumstances are significant in laboratory assessment. Prothrombin time (PT), activated partial thromboplastin time (APTT) and fibrinogen (Fbg), measurements are basic coagulation tests used to evaluate variations of coagulation systems.

Aim

Investigate to what extent the storage temperature and time influence the results of routine coagulation tests (PT, APTT, and Fbg). It included a total of 120 participants were assayed for different storage temperatures.

Patients and methods

The platelet poor plasma was assayed for baseline values for PT, APTT, and Fbg on Sysmex 1500 apparatus, and then it was assayed for different storage temperature and time.