Coagulation Testing- aPTT units
activated Partial Thromboplastin Time test
(aPTT):
Reported
units:
Used
to monitor therapy of:
Patient time to clot in seconds
(26.0 – 36.0 sec.)
Normal Control time in seconds
Heparin
Normal = 26.0 – 36.0 seconds
Therapy = 2 – 2.5 times normal control
If normal control =
28.0 seconds then therapeutic range is 56.0 – 70.0 seconds