Laboratory: Hematology
Test Name:
PTT (PARTIAL THROMBOPLASTIN TIME) - (P)
Test Code: APTT
Clinical Information:
Test performed at:  
HSC, SBH, Selkirk, Boundary Trails, Bethesda, Victoria, Concordia, Grace, Seven Oaks, Portage, Dauphin, Swan River, The Pas, Flin Flon, Thompson
Collection Devices:
Specimen Required:
Blood: 1.8 mL
Referral:
Plasma: 1.0 mL

Send 1 mL (minimum volume 0.5 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:
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, cord blood, bivalirudin therapy, stroke protocol, massive hemorrage protocol (MHP)
See Also:
More Information: