The coffee DNA test
Answer 6 quick questions about your caffeine habits and get your coffee type. The test is educational — it guesses your habits, not your genetics. If you want to see what a marker near CYP1A2 (rs762551) actually suggests you can check your own raw data file locally afterwards.
A friend got a coffee type in this test — what will you get?
And the genetics? The habits above are a fun guess — but the marker rs762551 near CYP1A2 is linked in studies to how quickly the body breaks down caffeine. It is an association, not a verdict: habits, age, medication and smoking play at least as large a role.
Why caffeine is perfect for a DNA test
Almost everyone drinks coffee, and the CYP1A2 association is one of the most cited everyday variants in research literature. It shows exactly what genetics can say — a statistical leaning — and what it cannot: your own coffee drinking is mostly explained by routine, not by a single base.
More: The coffee challenge info page · DNA mysteries · Download your raw file