Online DNA tests ‘extremely unreliable’ at detecting rare disease-causing genetic variations

Taking an online DNA test to find out your ancestry is one thing, but be careful about using them to assess your genetic predisposition to disease.

New research shows the technology widely used in direct-to-consumer genetic tests is more likely to be wrong than right at detecting rare disease-causing genetic variations.

University of Exeter researchers launched the study after learning of cases where women had surgery scheduled after…