Activated Partial Thromboplastin Time (aPTT)

Test/Investigation

Activated Partial Thromboplastin Time (aPTT)

Site(s) or Laboratory offering Test/Investigation

JPUH, NNUH, QEH

Also Known as/Frequency of Test

Coagulation screen

Indications

Assessment of haemostasis

Comments/Precautions

Sample should be filled to the mark in the tube. Under or overfilled samples will be rejected. Please provide details of anticoagulants, if patient is on any.

Ideal sample age for accurate results/Maximum acceptable sample age (at the time of analysis)

Upto 8 hours (Ideally 4 hours); Max 24 hours

Sample type

Citrate (1:9)

Turnaround times (TAT) Urgent/Routine/GP or OPD

1 hour/4 hours/8-16 hours

If UKAS Accredited Test indicate at which site

Yes: NNUH & QEH