PTT (PARTIAL THROMBOPLASTIN TIME) - (P)
Test Code: APTT
Test performed at:
Health Sciences Centre, St. Boniface Hospital, and Westman Regional Hematology Labs
Blood: 1.8 mL
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.
26 - 38 seconds as of August 27, 2014
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.