# JWO: Device, Blood Volume Measuring

- Device class: 2; regulation: 21 CFR 864.5950; FDA's rule: 510(k) required
- FDA decisions: 3
- 510(k) review time 2021–2025: median 117 days (middle half 117–117)
- Recalls: 0 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026; MAUDE to Sep 30, 2026

## Decisions per year (last 10)
- 1997: 1
- 2025: 1
- 2026: 1

## Most-cited predicates
- K251087: Blood Volume Analyzer (200) (2025), cited by 1
- K964406: Automated Multi-Point Blood Volume Analyzer (1997), cited by 1

Source page: https://510kreport.com/product-code/JWO
Data by year (CSV): https://510kreport.com/product-code/JWO.csv