was kostet eine blutuntersuchung auf vitamine und mineralstoffe — can a microbiome test help?

The cost of a blood test for vitamins and minerals varies widely: a basic panel (e.g., vitamin D, B12, iron) typically costs €30–80 as a self-pay service, while a comprehensive panel (all vitamins, trace elements) can range from €150 to €400 or more, depending on the lab and whether a doctor's referral is used. A microbiome test cannot replace these blood tests. It analyzes gut bacteria composition and can offer insights into fermentation capacity or inflammation, but it does not measure actual vitamin or mineral concentrations in the blood. The evidence that microbiome tests help diagnose or guide supplementation for vitamin/mineral deficiencies is weak – no validated clinical algorithms exist to infer nutrient status from stool samples. Most commercial claims are marketing-driven. For specific deficiencies, a blood test ordered by a physician remains the gold standard. A microbiome test may provide complementary context about gut health, but it is not a substitute for measuring circulating nutrient levels.