Russell's viper venom


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venom

 [ven´om]
poison, especially a toxic substance normally secreted by a serpent, insect, or other animal.
Russell's viper venom the venom of Vipera russelli (Russell's viper), which acts in vitro as an intrinsic thromboplastin and is useful in defining deficiencies of coagulation factor X.

Russell's viper venom

the venom of Russell's viper (Vipera russelli), which acts in vitro as an instrinsic thromboplastin and is useful in defining deficiencies of blood clotting factor X.

Russell's viper venom viper venom time (RVVT)
a one-stage prothrombin time test, used to distinguish between deficiency of factor VII and factor X. Called also Stypven time.
References in periodicals archive ?
Russell's viper venom can also affect the pituitary gland, the small pea-sized organ involved in hormone production.
1,2) These findings consisted of a prolonged activated partial thromboplastin time (APTT), abnormal 1:1 mixing studies that did not correct into the normal range of the laboratory reagent/instrument combination, falsely decreased coagulation factors that corrected upon dilution, a positive dilute Russell's Viper venom assay, and a positive platelet neutralization assay.