Policy and guidance
ABO
- OPTN policy 5: organ offers, acceptance, and verification (PDF - 3 MB)
- Evaluation plan guidance for policy 5 (PDF - 808 KB)
- Guidance addressing blood type determination
- ABO sub-typing of blood-type A and AB organ donors (PDF - 501 KB) (6/2018)
- ABO verification flow chart (PDF - 60 KB) (3/2016)
Disease transmission
PDDTE policy changes - effective 9/1/2016
- Pathogens of special interest (PDF - 239 KB) (8/2025)
- Policy notice (PDF - 594 KB) (8/2016)
- FDA-cleared assays, used to determine toxoplasmosis immune status or diagnosis (8/2016)
Other resources
- Chagas screening testing FAQs (PDF - 118 KB) (9/2025)
- Measles Update and Considerations for Transplant Safety (PDF - 38 KB) (6/2025)
- List of countries endemic for Chagas disease as classified by the Centers for Disease Control and Prevention (PDF - 105 KB) (2/2024)
- Recognizing seasonal and geographically endemic infection in organ donors: considerations for deceased and living donation (PDF - 537 KB) (1/2024)
- Summary of Evidence on SARS-CoV-2 (PDF - 290 KB) (2/2024)
- Summary of current evidence and information – Mpox in donor screening and transplantation (PDF - 243 KB) (2/2024)
- Policy 15: disease transmission (PDF - 3 MB)
- Guidance on requested deceased donor information (PDF - 196 KB) (6/2018)
Extra vessels
Professional education
Online education:
UNOS Connect is a comprehensive learning management system for transplant professionals. Through UNOS Connect, members can find educational offerings focusing on effective practices, system updates (UNetSM) and policy changes. If you don’t have access to UNetSM, use the button below.
Information
Disease transmission
Committees
We are grateful to dedicated OPTN members who helped create many of these resources, including:
Date Last Reviewed: