What should I know about trockenbluttest ablauf und schritte einfach erklart?

A dry blood spot (DBS) test is a simple method for collecting blood via finger prick. Steps: 1) disinfect finger and prick with a lancet, 2) wipe away the first drop, 3) apply several drops onto a special filter paper card, 4) let the card air-dry (about 2–4 hours, avoid direct sunlight), 5) seal in a protective bag and mail to a lab. The lab punches out the dried spots and analyzes them using mass spectrometry or immunoassays. Advantages: convenient at home, low infection risk, stable at room temperature. Limitations: some analytes (e.g., hormones, vitamins) are less reliable in DBS than in venous blood; hemolysis or insufficient filling can skew results. In Germany, health-related DBS tests fall under the Genetic Diagnostics Act (GenDG) – they require physician involvement and pre-/post-test counseling. Many direct-to-consumer tests do not comply. The EU IVDR (2017/746) classifies most such tests as Class C/D medical devices, demanding clinical validation and notified-body review. Check whether the test carries CE-IVD marking and offers medical guidance. A DBS test can provide a preliminary insight but does not replace a clinical diagnosis.