What does the DUTCH test show that a blood test doesn’t?
Blood measures circulating hormones at one moment. DUTCH adds urinary metabolites, a day-level view and timed cortisol. What each answers, and where it stops.
How accurate are biological age tests?
A 2026 study compared 16 biological aging markers in the same 1,083 adults. Two flagged health problems years early. Accuracy depends on what a marker measures.