Updated July 29, 2011

Listing of laboratories that offer Estrogen Receptor (ER) and Progesterone Receptor (PgR) validation testing services to laboratories performing initial validation studies.

This list is offered as a service to laboratories seeking a reference laboratory that offers ER and PgR assay validation services. The list identifies laboratories that have validated ER and PgR assays and offer reference testing for other laboratories attempting to validate ER and/or PgR assays (usually on a fee-for-service basis). All laboratories listed below attest to having validated their assays in a manner that is fully conformant with the ASCO/CAP guideline recommendations for IHC testing of ER and PgR. No laboratories have compensated the CAP to be included on this listing.

The CAP has not investigated the accuracy of the attestations provided, or the qualifications, experience or expertise of any individual on the list. Before engaging the services of any laboratory you should make your own assessment of the laboratory’s qualifications. The College of American Pathologists does not endorse any laboratory or individual on the list and hereby disclaims any responsibility for the actions of either party.

Request to be listed as a provider of ER and PgR validation services (PDF, 509 K)