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Non-paternity – incidental finding — RACP Paediatrics MCQ

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HardGeneticsNon-paternity – incidental findingRACP Paediatrics

Genetic test results reveal unexpected non-paternity (the stated father is not the biological father). What is the appropriate handling of this incidental finding?

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Correct answer: BNon-directive genetic counselling

Non-paternity is a sensitive incidental finding in genetic testing. Most guidelines recommend that non-paternity should NOT be disclosed proactively unless it directly affects the child's medical management. If it is medically relevant (e.g., changes risk assessment for an AR condition), disclosure should be handled carefully with the mother first. Consent processes should ideally address the possibility of unexpected findings beforehand.

Reference: RACP Paediatric Curriculum – Genetics/Ethics; HGSA – Guidelines