Heparin Therapy

NameHeparin Therapy
Tube TypeBlue (Sodium Citrate)
Reporting Unitsu/ml
Reference RangeAPTT: 25 – 36 s
APTTR: 1.05 -2.5
FXa 0.35 – 0.7  u/ml
AvailabilityNDDH (24/7)
Target turnaround time2 hours
Special requirements & notesFor peak  a sample should be taken 2-4 hrs after dose given
Patient preparationN/A
Volume required1 tube (2.7ml) must be full
If delayed transport to lab, store:In refrigerator 2 – 8oC
Factors affecting result interpretationClotted sample, underfilled samples and haemolysis
Time limit for add on test2 hours
Pathology disciplineHaematology
‘Lab Tests Online’ linkN/A

Last updated: May 27, 2020