There has been concern that China has been running medical exams on Uyghur prisoners in camps to find close matches for recipients and decrease chances of complications

https://thediplomat.com/2025/07/xinjiangs-organ-transplant-expansion-sparks-alarm-over-uyghur-forced-organ-harvesting/

Rogers noted one chilling possibility: that “murdered prisoners of conscience (i.e., Uyghurs held in detention camps)” could be a source of transplanted organs.

This suggestion becomes even more concerning when considering the extensive surveillance and repression that Uyghurs face in the region. Detainees in the many internment camps in Xinjiang have reported being subjected to forced blood tests, ultrasounds, and organ-focused medical scans. These procedures align with organ compatibility testing, raising fears that Uyghurs are being prepped for organ harvesting while in detention.

Wendy Rogers is an Australian bioethicist that has been researching forced organ transplants for a long time, so if she says there is reason to be concerned, I believe her https://researchers.mq.edu.au/en/persons/wendy-rogers