Regarding typical costs for FTO testing in children, the provided knowledge context contains no relevant information. The entries cover FADS1, FADS2, DAO, SHBG, GC, PER3, and COMT – not FTO. FTO (fat mass and obesity-associated gene) is commonly marketed in direct-to-consumer genetic tests as an 'obesity risk gene'. Costs vary widely depending on the test panel and provider, typically ranging from $50 to $300. However, the evidence for actionable benefit from FTO testing in children is weak. Most studies show a modest effect on BMI that is overshadowed by lifestyle and environmental factors. Pediatric guidelines do not recommend routine FTO genotyping. Additional costs may arise from follow-up consultations or unproven supplements. Without specific context, the answer remains conservative: costs are market-driven, and clinical utility is limited. Safety note: avoid unnecessary genetic testing in children without medical indication.
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