For a 510(k), carrying out the biocompatibility testing in an FDA-recognized lab is not mandatory; rather, the test lab that performs biocompatibility tests must be in accordance with the FDA-recognized ISO 10993 standard, and they must use Good Laboratory Practices (GLP), 21 CFR 58 as applicable, and have AAALAC accreditation or another similar animal welfare certification. The US FDA will only accept test results from laboratories that fulfill these criteria.