In direct ELISAs, no cross-reactivity with recombinant human Serpin A1, A3, A4, A8, C1, F1, F2, I1, I2, recombinant mouse Serpin D1 or E2 is observed. Reconstitute at 0.5 mg/mL in sterile PBS. PAI1 (plasminogen activator inhibitor 1) belongs to serine pr