The standardized ReproTracker® laboratory test is used to investigate whether chemical compounds disrupt early embryonic development. It records the most important cellular events in human stem cell differentiation and early embryonic development. ReproTracker can be used as an early-stage developmental toxicity screening platform and as an alternative to animal testing for tissue and organ malformations.

Sources and further information:
https://toxys.com/blog/2025/10/08/press-release-charles-river-and-toxys-announce-collaboration-to-validate-the-use-of-nams-for-developmental-toxicity-testing/
https://toxys.com/reprotracker/