Genotoxicity Testing Laboratories for Medical Devices

What does it measure?

• Evidence of gene mutation, chromosomal damage or other genotoxic effect in the assays selected
• Whether an identified extractable, rather than the device generally, drives the concern

When is it used?

• Devices with prolonged or permanent contact, or contact with internal tissue or blood
• New materials, additives or colourants without an established history of use
• Where chemical characterisation identifies a substance without adequate toxicological data
• Bringing an older evaluation into line with the current family of standards

Sample considerations

• Extraction conditions and the assay battery follow the applicable part of the ISO 10993 family and should be agreed before work starts.
• Genotoxicity programmes need substantially more device material than screening endpoints.
• Where chemical characterisation exists, share it — it can change which assays are appropriate or whether testing is needed at all.
• Study duration is long relative to other endpoints; plan submission timelines accordingly.

Laboratories with relevant capabilities

• WuXi AppTec Medical Device Testing (Suzhou, Jiangsu) — Biocompatibility, Chemical Analysis, Microbiology

Frequently asked questions

Is genotoxicity testing always required?

No. It is one endpoint considered within a risk-based biological evaluation, and whether data are needed depends on the device, its materials, the nature and duration of contact and the information already available.

Can chemical characterisation avoid genotoxicity testing?

Sometimes. If extractables are identified and adequately assessed toxicologically, that assessment may address the endpoint. Whether it is accepted depends on the device and the requirement you are working to.