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Test Code PTT Partial Thromboplastin Time

Important Note

Deliver to the lab within 4-hours of collection

Specimen Information

Obtain specimen using standard phlebotomy techniques.

No special patient preparation is necessary.

 

Container Specimen Temperature Collect Vol Submit Vol Min Vol Stability
Blue Top Tube Whole Blood Ambient To fill line To fill line To fill line 4 hours
Blue Top Tube Plasma Frozen To fill line 2.0 mL Plasma 0.5 mL Plasma 6 months

 

Reject Due To:

- Above criteria not met

- Marked hemolysis

- Clotted

- Tube over or underfilled

 

Tubes must be filled to the fill line.

Instrumentation / Method

ACL TOP 350 CTS / Photo Optical Clot Detection

Test Schedule / Analytical Time / Test Priority

Daily / Same Day / Available STAT

Reference Range

25.1 - 36.5 seconds

 

Critical Value(s): >60 seconds

Heparin Protocol: <55 secs or >85 secs

 

CPT / LOINC / Order Code

 

Meditech Medent LOINC CPT
PTT PTT 14979-9 85730