- IgM, IgG, or IgA binding to cell-membrane constituents
- Measured by enzyme-linked immunosorbent assay
- APL testing
- Connective Tissue Disease with clotting disorder
- Recurrent thrombosis without obvious cause
- Antiphospholipid Antibodies
- Anticardiolipin Antibody (ACA)
-
Lupus Anticoagulant
- Prolongs Partial Thromboplastin Time (PTT)
- Prolongs Russell viper venom time
- VDRL False Positive
- APL elevations (>3 SD)