Test ID: QG046
CPT code: 85732, 85705, 85613, 85670
LOINC:
Specimen Type: Blue (sodium citrate)
Frequency: 2 – 3 days
Instructions: 3 mL Plasma from Blue (sodium citrate), Frozen, DOUBLE CENTRIFUGATION. FREEZE immediately. Min 2 mL.
Text: Qualitative detection of lupus anticoagulants in plasma. Lupus anticoagulants are antibodies that inhibit one or more of the in vitro phospholipid-dependent tests of coagulation. No single screening test can detect all LA-positive patients.
Methodology: Lupus-sensitive aPTT and dPT screening tests; mixing study if screening test are prolonged; confirmation if the mixing studies do not correct.