File on 4 Investigates - Hair Strand Tests in the Family Court

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Hair Strand Tests can show if parents have been using drink or drugs. Such tests play can a central part in Family Court hearings every year as judges decide whether children should go into care or not. Some barristers have been raising the alarm over the way the tests are presented and interpreted in the Famly Court. And, for the first time, File on 4 Investigates talks to mothers who nearly lost their babies – thanks to hair strand tests.

Presenter: Sanchia Berg
Senior Producer: Anna Meisel
Producer: Mary O'Reilly
Technical Producer: Kelly Young
Production Co-ordinator: Tim Fernley
Editor: Tara McDermott

Image: Lead Senior Scientist Dr Ellie Menzies carrying out a hair strand test

Published on Tuesday, 26th May 2026.

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