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LUPUS ANTICOAGULANT
Number 628
CPT Code 85613
Alias LUPUS ANTICOAGULANT
Specimen Container Blue Top Citrate
Specimen Type Plasma Citrate
Turn Around Time
Days Performed
Reference Range Contact Laboratory
Alternate Specimen
Volume 6 mL Plasma
Stability Ambient Unstable
Stability Refrigerated Unstable
Stability Frozen Preferred
Patient Preparation
Ideally, the patient should not be on anticoagulant therapy. Avoid warfarin (Coumadin®) therapy for two weeks prior to the test and heparin, direct Xa, and thrombin inhibitor therapies for about three days prior to testing.
Methodology
PTT-LA (lupus-sensitive aPTT) and dRVVT screen; mixing study if screening tests are prolonged; confirmation if the mixing studies do not correct
Limitations
Rejection Criteria
Severe hemolysis; improper labeling; clotted specimen; specimen diluted with IV fluids; samples thawed in transit; improper sample type; sample out of stability
Additional Instructions
Performing Laboratory Reference Laboratory
TagsLUPUS, ANTICOAGULANT