American College of Histocompatibility and Immunogenetics (ACHI) · Verified against ACHI's Examination Candidate Handbook, latest update January 2026, and the current Resource Hub's shared CHA/CHT Exam Content Outline. The outline filename contains revision marker 20250321; its page does not state an effective date and its heading names Certified Histocompatibility Technologist. Its application to CHA is evidenced by ACHI's shared CHA/CHT link. The assigned CHA name and slug are retained.

This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.

• ACHI Resource Hub
• ACHI Examination Candidate Handbook — January 2026
• ACHI CHA/CHT Exam Content Outline — PDF headed Certified Histocompatibility Technologist
• ACHI CHA, CHS, & CHT Examinations
• WHO LQMS Module 5 — Sample Management
• WHO LQMS Module 4 — Purchasing and Inventory
• WHO LQMS Module 7 — Quantitative Quality Control
• WHO LQMS Module 3 — Equipment
• WHO LQMS Module 16 — Documents and Records
• WHO LQMS Module 14 — Occurrence Management
• WHO LQMS Module 2 — Facilities and Safety
• WHO Laboratory Quality Stepwise Implementation Checklist
• HLA Nomenclature — Naming Alleles
• One Lambda LABScreen Single Antigen HLA Class I — Combi
• One Lambda Micro SSP — Sequence Specific Primer DNA Typing Trays
• Versiti — Crossmatch (Flow Cytometry) Against Recipient
• Canadian Blood Services — Pre-transfusion Testing
• One Lambda Devyser Chimerism for NGS
• HLA Antibody Specification Using Single-antigen Beads—A Technical Solution for the Prozone Effect
• NMDP — Matching Blood Stem Cell Donors and Patients
• MHC Class II Interaction with CD4 Mediated by a Region Analogous to the MHC Class I Binding Site for CD8
• Thermo Fisher Scientific — Define and Set Up Standard Dilutions