Tag Archives: Predictive markers/predictive marker testing

September 2022—Beginning next year, two additional predictive marker tests will require enrollment in proficiency testing (PT), but for any predictive marker using immunohistochemistry or in situ hybridization, only laboratories that perform both staining and interpretation must participate in CAP-accepted PT.

November 2019—In the 2019 edition of the CAP accreditation program checklists, released in September, requirements for predictive marker testing were revised to make them general so they apply to all types of such testing performed by immunohistochemistry and in situ hybridization, wherever possible.