3001 PTT (Partial Thromboplastin Time)

Specimen Type Specimen Stability Reference Range
Plasma-Light Blue-top Tube (3.2% Sodium citrate).
Collection tube must be filled to fill line on tube.
24 hrs Refrigerated
> 2 weeks Frozen.
26.6 - 32.1 Seconds

Specimen Requirements

Full draw volume of collection tube to fill line on tube required.
If specimen is aliquoted, the minimum sample volume is 1.0 mL.
If >4 hour delay, please aliquot off plasma and FREEZE. Call lab for frozen specimen pick-up.

Method

Photo-Optical clot detection

Schedule

Mon-Sat

Turn-Around Time

24hrs; Also offered STAT at an additional charge

Instructions/Notes

See 'Specimen Requirements'.
Avoid hemolysis.

Clinical Utility

As part of an investigation of a possible bleeding disorder (intrinsic) or thrombotic episode; to monitor unfractionated (standard) heparin anticoagulant therapy.

CPT Codes

85730

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