The reproductive conditions of anti-lymphocyte immunoglobulin(ALG) semi-finished product unqualified in pyrogen were studied. The content of bacterial endotoxin obviously decreased when the semi-finished products in high pyrogen were treated with HCl, NaOH and A50. The pyrogen of ALG semi-finished product reached the Requirement Standard by the Rabbit test and Limulus Amebocyte Lysate(LAL) test. Its biological activity still kept at a level of ≥1:4000 after treatment. The result showed that the treatment wa...