Kenya Medical Laboratory Tests

APTT Test in Kenya

Brief Description

it is a test that measures how long blood takes to is used to distinguish specific and non specific inhibitors(lupus anticoagulant)"," determine presence of heparin


activated partial thromboplastin time

Patient Preparation

The patient should not be on anticoagulant therapy"," avoid wafarin for two weeks prior to testing and thrombin inhibitor therapies three days to the test.

Sample Type


Sample volume


Sample collection Container

blue top tube(sodium citrate)

Sample collection instructions

citrated plasma samples should be collected by double centrifugation.evacuated collection tubes must be filled to completion and mixed immediately by inversion to ensure a proper blood to anticoagulant ratio

Sample storage

samples should be frozen

Reference range

30-40 secs

Results Turnaround

2-3 days after receipt of samples

Diseases / Diagnostic Indicators

it is associated with hemophilia and von willebrand disease"," and in heparin therapy.