# K931996: Model Pdexa Bone Densitometer

- Pathway: 510(k) (Traditional)
- Applicant: Norland Corp.
- Decided: Feb 1, 1995 after 649 days
- Product code: KGI (Densitometer, Bone)
- Device class: 2
- Regulation: 21 CFR 892.1170
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
5 later devices descend from it; 4 cite it directly.
0 of 6 devices in its family (counting itself) have a Class I recall.

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

## Most influential descendants
- K980125: Reference Population for Norland Apollo X-Ray Bone Densitometer (1998), 1 descendant of its own
- K993176: Multi-Racial Reference Population for Pdexa and Discovery (2000), 0 descendants of its own
- K993337: Apollo Multi-Racial Reference Population (2000), 0 descendants of its own
- K972882: Apollo (1997), 0 descendants of its own
- K972053: Pixi Young Adult Referenc Population for OS Calcis and Forearm (1997), 0 descendants of its own

Source page: https://510kreport.com/device/K931996
Methodology: https://510kreport.com/methodology