Specimen:
Collect
- One Blue Top (Na Citrate)
Submit
- 1 mL (Min:0.5 mL) Plasma . Submit Frozen. Submit in a Standard Transport Tube.
Special Handling
- If patient is on Heparin Therapy separate plasma from cells within 1 hr, plasma is stable for 2 hrs ambient.
Patients that are on therapeutic coagulation drugs, including but not limited to Rivaroxaban, Apixaban, Edoxaban, Dabigatron, Vit K antagonists, and Unfractionated Heparin, are known to cause interference with testing. Discontinue drugs for a minimum of 24 hours prior to any aPTT testing.
Rejection Criteria
- Clotted Specimen
- Grossly Hemolyzed Samples
- Collection tubes not properly filled
Stability
Ambient: 4 Hour(s); Refrigerated: Unacceptable; Frozen: 2 Week(s); Incubated: Unacceptable
Methodology
- Mechanical Clot Detection
Performed
Mon-Fri
Reported
1-3 Day(s)
CPT Codes
- 85730
Interpretive Data
General Reference Range : 22.9-41.3 sec
Components
- 3505 - PTT
Last Updated: November 20, 2024 @ 10:13 am
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