Prothrombin Time + Dose
Sample Reqs
C
Turnaround
4 hours
Special instructions
Citrate Samples: Samples should be double spun and separated and frozen within 4-8 hours of sample taking. If a delay is expected with transportation to the laboratory, samples must be transported as frozen.
Sample type guide
C
Light blue Vacutainer, Citrate anticoagulant, 4.5ml
Additional information
All citrate samples sent by post or with an overnight delay must be double spun and sent frozen.
Please send samples to:
Health Services Laboratories, The Halo Building, 1 Mabledon Place , London WC1H 9AX
Please note that sample stability times will affect the feasibility of running add-on tests – please phone the lab to discuss on 020 3946 8854.
- How to order a test
- Guidance on specimen collection
- Specimen transport
- Sample rejection criteria
- Request Forms
Last-updated: 12/08/22