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Lupus Anticoagulant Screen with Confirmation


TEST DIRECTORY
Test Name
Lupus Anticoagulant Screen with Confirmation
Test Code
LASC
SPECIMEN REQUIREMENTS
Specimen Requirements
Minimum of 3.5 mL plasma in 3 separate transport tubes.
Supplies for Submission
Light Blue Top (3)
Specimen Collection
  1. Fill up a Light Blue Top tube as completely as possible and mix by gently inverting the tube 5-6 times.
    Inadequate filling will distort the exact ratio of 1 part sodium citrate to 9 parts blood required for accurate results.
  2. Immediately centrifuge the specimen at 1500 RCF for 15 minutes.
  3. Pipette the supernatant plasma and transfer to a plastic transport tube.
  4. Re-centrifuge plasma in the transport tube at 1500 RCF for 15 minutes to make sure that no red blood cells are present.
  5. Pipette the top two-thirds of the supernatant plasma and transfer 2.0 mL to a second transport tube, labeled with two patient identifiers.
  6. Label aliquot tube as citrate plasma and immediately freeze at -20 °C or lower for transport.
Storage Requirements
Critical Frozen (CFZ)
Causes for Rejections
Specimens stored at room temperature or refrigerated specimens are not accepted.
GENERAL AND TECHNICAL INFORMATION
Turn Around Time
11 days
CPT Code
85730, 85613, 85610; when confirmation testing is performed, may add
85670, 85635, 85525, 85732, 85613x2, 85598