StacksVerified U.S. regulatory reference

21 CFR §864.8950

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Identification. Russell viper venom reagent is a device used to determine the cause of an increase in the prothrombin time.
  2. (b)Classification. Class I (general controls).