Test ID: PTTMX
CPT code: 85732
LOINC: 5946-9
Specimen Type: Citrate
Frequency: Setup: Mon-Fri; TAT 1-3 days
Instructions: Full 3.2% sodium citrate tube (Blue). If not analyzed within 4 hrs, spin 15min at 1500xg, separate plasma into 2 1.0ml aliquots, freeze at -20.
Text: Distinguish between circulating anticoagulants and factor deficiencies.
Stable frozen for 2 weeks.
Methodology: 50/50 dilution/ clot detection