Your Cart

Special instruction: Do not draw from an arm with a heparin lock or heparinized catheter.

Preparation instructions: Draw specimen one hour before next dose of heparin if heparin is being given by intermittent injection.

Turnaround time: Expected turnaround is within one day, although this may vary depending on other tests ordered for the same blood draw, and expected variation with testing.

Also known as:

  • PTT
  • aPTT
  • Activated Partial Thromboplastin Time