# LQD: Recorder, Attention Task Performance

- Device class: U; regulation: 21 CFR —; FDA's rule: 510(k) required
- FDA decisions: 11
- 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)
- 1986: 2
- 1991: 1
- 2002: 1
- 2004: 1
- 2012: 1
- 2014: 2
- 2016: 1
- 2017: 1
- 2018: 1

## Most-cited predicates
- K854903: Gordon Diagnostic System Model I (1986), cited by 2
- K133382: QB Test (2014), cited by 2
- K122149: QBTES (2012), cited by 2
- K040894: Qbtest (2004), cited by 1
- K020800: Optax System (2002), cited by 1
- K911938: Dynavision 2000 (1991), cited by 1

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