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Correction Studies PTT*

Important Note

*This test is orderable in Cerner as Correction Studies PTT

Methodology

Photo-Optical

Performing Laboratory

Rutland Regional Medical Center Laboratory

Specimen Requirements

Specimen Type: Whole blood
Container/Tube: Light-blue top (citrate)

Specimen Volume: 2 full tubes

Specimen Minimum Volume: 5.4 mL

Collection Instructions:

1. Tubes must be full. (Do not underfill or overfill tubes.)

2. Send specimen in original tubes.

Additional Information: Plasma is stable for 4 hours when refrigerated.

Specimen Transport Temperature

Refrigerated

Reference Values

22.4-35.9 seconds

Critical value (automatic call-back): >130 seconds

Day(s) Performed

Daily

Analytical Time:

1 day

Test Classification and CPT Coding

85730-PTT

85732-PTT substitution, plasma fractions, each