How to prepare for FTO Test

Preparing for an FTO test (genotyping of the FTO gene) is similar to other DNA tests offered by MyBody-X. The provided context does not contain specific instructions for the FTO test. General best practice for saliva-based DNA tests: avoid eating, drinking, smoking, or brushing teeth for 30 minutes before sample collection to prevent contamination. The FTO variant (e.g., rs9939609) is associated with a modest increase in obesity risk, but effect sizes are small and lifestyle factors dominate. The test is not a medical diagnostic tool; it is for informational purposes. Evidence for clinical utility is weak (GWAS-derived, small odds ratios). No special diet or preparation is required. Important: Do not base drastic dietary changes solely on this result. Consult a healthcare professional for personalized advice.