Living kidney donation is based on voluntary, informed consent and thorough medical and psychosocial evaluation of the donor. MCCQE ELOM objectives emphasize respect for autonomy and avoidance of unjustified discrimination. An ex-spouse may be considered as a potential donor if he meets medical criteria and demonstrates informed, voluntary decision-making free of coercion. Marital status or divorce is not a valid reason to exclude someone from donor assessment.

Concerns about the welfare of their child are important but are addressed during the standard donor evaluation process, which includes psychosocial assessment and discussion of risks. Donation cannot be automatically refused on speculative grounds. Instead, transplant programs conduct rigorous screening to ensure donor safety and voluntariness.

Therefore, the appropriate response is to allow him to proceed with formal donor assessment , where suitability, risks, motivations, and support systems will be evaluated comprehensively before any final decision is made.