PTT

Important Note

*This test is orderable in Cerner as PTT

Specimen Type: Whole blood

Container/Tube: Light-blue top (sodium citrate)

Specimen Volume: Full tube

Specimen Minimum Volume: 2.7 mL

Collection Instructions:

1. Tube must be full. (Do not underfill or overfill tube.)

2. Send specimen Room Temperature in original tube.

Test within 4 hours or freeze plasma

22-35 seconds

NEW reagent effective 10/04/2022- Therapeutic Heparin Reference Range (0.3-0.7 effective anti-Xa level) 40-70 seconds."

Critical result: >120 seconds

Sysmex CA660

Photo-Optical

Daily / Same day / Available STAT

85730