Trust Homepage > Pathology Homepage

Test and Tubes Database
ID:289 Prothrombin time (PT)
Search Links: General Info : Protocols : LabTestsOnline

DescriptionA coagulation screening test for the extrinsic and common pathways
IndicationPre-operative screening test or investigation of a clotting disorder
Additional InfoUsed to calculate the INR for control of warfarin therapy. Please note: test can only be added to samples within 24 hours of collection
Concurrent TestsCoagulation Screen
Dietary RequirementsNone
InterpretationInterpreted against a normal range

Tube Picture
Collection ConditionsAll coagulation tubes must be filled to the line.
Min. Vol

Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed)
Ref. Range NotesCritical telephone values: PT greater than 20 seconds (with no obvious cause) will be phoned to the ward/clinical area. It the patient is on warfarin INR results greater than 5.0 should be phoned
IP Acute TATRefer to Website
IP Routine TATRefer to Website
GP Acute TAT- Contact Laboratory
GP Routine TATRefer to Website
Turnround Comment

Originally edited by : RJAR. Review due on 18/06/2019 10:38:01. Published By RJAR on 18/06/2018 10:38:01.