# K020800: Optax System

- Pathway: 510(k) (Traditional)
- Applicant: Optax Systems, Inc.
- Decided: Jun 10, 2002 after 90 days
- Product code: LQD (Recorder, Attention Task Performance)
- Device class: U
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K854903 (1986). 1 ancestor in all.
6 later devices descend from it; 1 cites it directly.
0 of 8 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K854903: Gordon Diagnostic System Model I, Clinical Diagnostics, Inc. (1986) Summary page 1.

## Most influential descendants
- K040894: Qbtest (2004), 5 descendants of its own
- K122149: QBTES (2012), 4 descendants of its own
- K133382: QB Test (2014), 2 descendants of its own
- K173915: Test of Variables of Attention (T.O.V.A.) (2018), 0 descendants of its own
- K143468: QbCheck (2016), 0 descendants of its own

## Indications for use
The OPTAx System provides clinicians with objective measurements of hyperactivity, impulsivity and inattention to aid in the clinical assessment of ADHD. OpTAx results should be interpreted only by qualified professionals.

Source page: https://510kreport.com/device/K020800
Methodology: https://510kreport.com/methodology