Russell's viper venom levels in serum of snake bite victims in Burma.

Serum levels of venom antigen were measured using enzyme-linked immunosorbent assay (ELISA) in 38 Russel's viper bite victims before and after administration of 40 ml of monovalent liquid antivenom. Initial serum levels ranged from one with less than 10.0 ng to 290 ng/ml and in one case a level of 75 ng/ml was detected 27 hours after the bite.