CRYOcheck™ LA Sure is a dilute Russell's Viper Venom Time (dRVVT) reagent intended to confirm the presence of lupus anticoagulant (LA) in citrated human plasma.

• Frozen format eliminates reconstitution errors
• Easily adapted for use on most instruments
• Unused reagent may be refrozen
• 48-hour stability once thawed if refrigerated at 2 °C to 8 °C in the original capped vial
• Screening (CRYOcheck LA Check) and confirmatory (CRYOcheck LA Sure) reagents are manufactured to strict tolerances and do not need to be "matched" by specific lot numbers