Dilute Russell's Viper Venom Time to Confirm Ratio Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the dilute Russell's viper venom time (dRVVT) without the presence of excess phospholipid to the dRVVT in the presence of excess phospholipid in a biological sample. The measurement may be expressed as either a ratio or a percentage.

**Synonyms:** - DRVVT Screen to Confirm Ratio - DRVVT Screen to Confirm Ratio - DRVVTSCR