# Von Willebrand Factor Assay
> **Product code: QTY** · Class II — Moderate Risk (510(k) clearance required) · Hematology · 21 CFR 864.7293
## Classification
- **FDA Product Code:** QTY
- **Device class:** Class II — Moderate Risk (510(k) clearance required)
- **Regulation:** 21 CFR 864.7293
- **Review panel:** HE
- **Medical specialty:** Hematology
- **Submission type:** 1
- **GMP exempt:** N
- **Life sustaining:** N
- **Implant:** N
- **Third-party review:** N
## Definition

A von Willebrand factor assay is a prescription device intended for the measurement of von Willebrand factor activity or von Willebrand factor size distribution in human plasma.

## Market data
- **Cleared 510(k) submissions:** 1
- **Registered establishments:** 1
## Source
- [FDA Device Classification](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?ID=QTY)
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