# K052929: Preftest Professional Suite

- Pathway: 510(k) (Traditional)
- Applicant: Limestone Technologies, Inc.
- Decided: Apr 26, 2006 after 189 days
- Product code: LIL (Monitor, Penile Tumescence)
- 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: 2 generations back to K936115 (1995). 2 ancestors in all.
No later device cites it as a predicate yet.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K033126: Monarch 21 Penile Plethysmograph System, Behavioral Technology, Inc. (2003) Summary page 1.

## Indications for use
The PrefTest Professional SuiteTM is used to measure penile tumescence in response to visual and auditory stimuli. Penile Tumescence data can later be combined with other standardized psychological testing procedures to assist clinicians with their assessment and treatment of sexual offenders.

Source page: https://510kreport.com/device/K052929
Methodology: https://510kreport.com/methodology