Laboratory: Hematology
Test Name:
PTT (PARTIAL THROMBOPLASTIN TIME) - (P)
Test Code: APTT
Clinical Information:
Test performed at:  
Health Sciences Centre, St. Boniface Hospital, and Westman Regional Hematology Labs
Collection Devices:
Specimen Required:
Blood: 1.8 mL
Referral:
Plasma: 1.5 mL

Send 1.5 mL (minimum volume 1.0 mL) of platelet poor citrated plasma in plastic aliquot tube frozen if testing cannot be completed with 4 hours of collection.  Send on ice.
Requisition:
Reference Values:
26 - 38 seconds as of August 27, 2014
Availability:
Daily or Stat
Test must be approved by Hematologist or Hematopathologist unless patient is on heparin therapy including baseline aPTT prior to the start of UFH for peri-liver transplant patients, or is cord blood.
See Also:
More Information:
Na Citrate 1.8mL Tube(s) - Full Tube Collection
Manufacturer: Becton Dickinson

Catalogue #: Product #36380