wie viel kostet dna test — when to see a doctor?

The cost of a direct-to-consumer (DTC) DNA test ranges widely, typically between €100 and €500 depending on the scope and provider. More important than the price is knowing when to see a doctor with the results. Many DTC tests report risk estimates for complex traits based on GWAS, which have limited predictive value for an individual. A doctor should be consulted if the results touch on clinically actionable areas, such as pharmacogenetics (e.g., CYP2C19*17 affecting clopidogrel metabolism) or if a significantly elevated risk for a treatable condition is indicated. For variants like MTHFR, professional guidelines (ACMG/CDC) advise against routine testing, as even TT carriers metabolize folic acid normally. Seeing a doctor is also warranted if you have unexplained symptoms or a strong family history, to interpret the results in a clinical context. The evidence for most DTC risk scores is moderate; medical guidance helps avoid misinterpretation and unnecessary interventions.