was kostet ein gentest erbkrankheiten — which blood markers matter?

The cost of a genetic test for hereditary diseases varies widely depending on scope and provider. Single gene variants (e.g., ADH1B, MMP1, NQO1) are often included in direct-to-consumer tests but have weak evidence for clinically relevant hereditary diseases. Relevant blood markers may include vitamin D (for VDR variants) or inflammatory markers, but a genetic test alone cannot replace medical diagnosis. For true hereditary diseases (e.g., BRCA, hemochromatosis), specific validated tests are required, often costing several hundred euros and should be ordered by a specialist. The evidence for the mentioned markers is mostly mechanistic or unclear.