An aid in the diagnosis of certain autoimmune thrombotic disorders, such as antiphospholipid syndrome (aPS). Antibodies to PS/PT correlate with the presence of lupus anticoagulants (LA) and this test may be useful in cases with difficult LA test interpretation. This assay may also assist in the determination of risk for thrombosis as well as obstetric complications in patients with antiphospholipid antibodies.

Gold serum separator (SST) tube

Immediatley following collection, mix sample by gently inverting 5 times

1. Allow sample to clot for a minimum of 30 minutes
2. Spin within two (2) hours of sample collection
3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
4. Freeze within six (6) hours of sample collection

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Red serum vial/tube, 5 mL

1. Allow sample to clot
2. Spin
3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp) , labelled as serum, within two (2) hours of sample collection
4. Freeze within six (6) hours of sample collection

Frozen (preferred) - 12 months

Refrigerated - 6 hours

Ambient - 6 hours

Freeze/thaw cycles - stable x5

• Gross hemolysis
• Gross lipemia

Enzyme-linked immunosorbent assay (ELISA)

< 31 Units