The American College of Histocompatibility & Immunogenetics (ACHI)

The American College of Histocompatibility & Immunogenetics (ACHI) is affiliated with the American Society for Histocompatibility and Immunogenetics (ASHI) operating as a function of ASHI’s Professional Standards Division to evaluate the education, training and experience of professionals in the field of histocompatibility and immunogenetics for eligibility to take its professional examinations and to practice in histocompatibility and immunogenetics in the United States and Internationally. The ACHI, in coordination with Data Recognition Corporation (DRC) develops and administers professional credentialing exams for doctoral (Associate, Fellow) and non-doctoral (CHA, CHT, and CHS) candidates.

Apply for the ACHI Exam

You will not be able to schedule an exam appointment if you have not applied for professional eligibility with ACHI. To complete an application, please visit the ACHI submission portal.

Exam Information

Find the LDE and CHA, CHT, and CHS Exam Handbooks, eligibility details, supporting documentation, and additional resources on ACHI's website.

Testing Accommodations

In compliance with the Americans with Disabilities Act (ADA) and equivalent Canadian provincial acts, the ACHI makes reasonable testing arrangements for candidates with documented professionally diagnosed disabilities. Please review the ACHI Exam Handbooks on the resources tab of the ACHI website for more information regarding ACHI testing accommodations.

Scheduling Your Exam

Once your exam registration application has been approved by the ACHI and the exam fee has been paid, you will receive an email with instructions on how to schedule your exam. Exam dates for the ACHI Certification Exams are determined annually.

If you intend to schedule an appointment, click the "Log in" or "Create an account" buttons at the top.

About the Exam

• The exam time includes all components of the exam, including the introduction, tutorial, and answering and reviewing exam questions.
• The ACHI examination is available in English.
• Upon completion of the test, your score report indicating pass / fail status will be available on Pearson portal.

ACHI currently offers two options for exam delivery:

• Test Center Delivery: Exams can be taken at Pearson’s worldwide network of testing centers.
• OnVUE Online Proctoring: CHA, CHT, and CHS exam candidates may schedule their exam for a specific date and time and take it from a secure, qualifying location using a computer. Learn more about OnVUE Online Proctoring to understand the process and technical requirements. Please note that OnVUE is not an option for LDE applicants.

Rescheduling or Canceling Your Exam

Exams can be rescheduled or canceled by clicking the "Log in" or "Create an account" buttons above. Rescheduling or canceling must be made at least ten business days before the exam is scheduled to be taken. No refunds will be given when a cancellation occurs less than 72 business hours before exam day. Review full scheduling policies in the ACHI Exam Handbooks on the resources tab of the ACHI website.