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Table 2 APTT-based Lupus Ratio before and after the addition of polybrene and heparin. APTT-based Lupus Ratios were determined in LA-positive and LA-negative patient plasmas before and after the addition of polybrene 7.9 μg/ml and/or heparin 1.0 U/ml. APTT-based Lupus Ratio <1.05 = negative result.

From: Detection and quantification of lupus anticoagulants in plasma from heparin treated patients, using addition of polybrene

  APTT-based Lupus Ratio median (range)  
  LA-positive patients n = 12 LA-negative patients n = 8
Lupus Ratio 1.29 (1.07 to 2.24) 0.99 (0.84 to 1.03)
Lupus ratio with polybrene 1.20 (1.01 to 2.19) 0.94 (0.82 to 1.00)
% change -5.50 (-10.85 to +1.77) -1.06 (-13.29 to +2.92)
Lupus ratio with heparin and polybrene 1.26 (1.04 to 2.22) 0.98 (0.85 to 1.00)
% change -3.52 (-6.80 to --1.10) -1.49 (-3.09 to +1.19)