# K935983: Microreader 4

- Pathway: 510(k) (Traditional)
- Applicant: Hyperion, Inc.
- Decided: Dec 9, 1994 after 360 days
- Product code: JJQ (Colorimeter, Photometer, Spectrophotometer For Clinical Use)
- Device class: 1
- Regulation: 21 CFR 862.2300
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
No later device cites it as a predicate yet.
0 of 1 device in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

Source page: https://510kreport.com/device/K935983
Methodology: https://510kreport.com/methodology