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Table 2 Results of laboratory tests for diagnosing antiphospholipid syndrome

From: Recurrent arterial and venous thrombosis in a 16-year-old boy in the course of primary antiphospholipid syndrome despite treatment with low-molecular-weight heparin: a case report

Date of test LAC aCL IgM (U/mL) aCL IgG (U/mL) β2-GPI IgM (SMU) β2-GPI IgG (SGU)
March 22 2011 No 31.14 120.0 Not determined Not determined
N<12 N<12
May 6 2011 No 25.86 14.25 14.25 107.40
N<12 N (0–20) N (0–20) N (0–200)
Follow up
June 22 2012 2.35 0.169 0.072 Not determined Not determined
N<1.2 N<0.109 N<0.156
  1. Abbreviations: aCL anticardiolipin, GPI glycoprotein, Ig immunoglobulin, LAC lupus anticoagulant, N normal range.
  2. SMU and SGU are the standard units for IgM and IgG antibodies anti- β2GPI (antibodies to β2 glycoprotein) using ELISA method.