Plasma-Light Blue-top Tube (3.2% Sodium citrate).
Collection tube must be filled to fill line on tube.
Test Directory
3001 PTT (Partial Thromboplastin Time)
Specimen Type
Specimen Stability
Reference Range
24 hrs Refrigerated
> 2 weeks Frozen.
> 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.
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.
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
