<prompt> All are included in sydney revision of sapporo criteria for Antiphospholipid antibody syndrome:Vascular thrombosisLivedo reticularis3 or more unexplained spontaneous aboionsLupus anticoagulant in plasma  <response>: Livedo reticularis is not included in the diagnostic criteria for Antiphospholipid antibody syndrome. Ref: Harrisons principles of internal medicine, 18th edition: Page 2737 