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Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).

Stain/Tissue Challenges/
Shipment A
Shipment B
Number of Shipments
IHC - GATA3 (Bladder biopsy) 1 Two shipments per year
IHC - p16 (Cervical biopsy) 1
IHC - HMB45 (Melanoma, skin, punch biopsy) 1
IHC - H. pylori (Stomach biopsy) 1
IHC - CDX2 (Colon biopsy) 1
IHC - PAX8 (Endometrium biopsy) 1
IHC - CD31 (Skin, excisional biopsy) 1
IHC - Prostate specific antigen (Prostate biopsy) 1

Additional Information

HistoQIP - IHC improves the preparation of immunohistochemistry slides in all anatomic laboratories involved in the handling of gastrointestinal, dermatologic, and urological tract biopsies. Participants will receive an evaluation specific to their laboratory and a Participant Summary. An expert panel of pathologists, histotechnologists, and histotechnicians will evaluate submitted slides for histologic technique using uniform grading criteria.

Program Information

  • Participants may submit up to four IHC stained and coverslipped glass slides (one from each category) per mailing

Shipping Schedule

  • Shipment A: February 6
  • Shipment B: July 24


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