top of page

ST-028 Chain of Identity (CoI) Identifier

Updated: Mar 27, 2023

The new ISBT 128 Standard for the Chain of Identity (CoI) Identifier (ST-028), developed based on requirements developed collaboratively with the Standards Coordinating Body ( (SCB), has been published. There are circumstances in the collection and processing of cellular therapy products for further manufacture where more than one donation may need to be collected to deliver a given therapy. This identifier provides a standardized, globally unique identifier that can be used to link these donations together. The CoI Identifier should be allocated either before, or at the time of, collection of the first donation.

In addition, the new CoI Identifier data structure was added to ISBT 128 Standard Technical Specification (ST-001), and the label examples were updated in ISBT 128 Standard Labeling of Collection Products for Cellular Therapy Manufacturers (ST-018).

ICCBBA thanks all who helped, either by participating with the SCB, serving on ICCBBA’s Cellular Therapy Coding and Labeling Advisory Group or Standards Committee, or providing comments during the public comment period.

Please contact the ICCBBA help desk ( with any questions.



bottom of page