CYP1A2 raw DNA marker
CYP1A2 rs762551 in 23andMe, AncestryDNA, or MyHeritage raw data.
If you are searching your raw DNA file for caffeine metabolism, rs762551 is usually the first CYP1A2 marker people look for. GenoSight can check marker coverage locally, then place the result inside a careful educational report.
Marker-first workflow
See whether the file contains rs762551 before uploading it.
- Browser-only local marker check
- Raw genotype string only
- No fast/slow label on the free page
- Full report uses caffeine habit context
Read rs762551 as context, not destiny.
Caffeine response is useful to personalize, but it is easy to overstate. GenoSight separates the raw marker lookup from the broader interpretation step.
What rs762551 is
rs762551 is a CYP1A2 marker commonly discussed in caffeine-metabolism searches. Consumer raw DNA files may include it, but coverage depends on provider and chip version.
What it is not
A raw rs762551 genotype is not a caffeine prescription. Sleep, anxiety response, blood pressure, medications, pregnancy status, and current caffeine habits all matter.
How GenoSight handles it
The Foods & Drinks report reviews supported caffeine markers against your self-reported coffee, tea, energy-drink, sleep, and symptom context.
Evidence boundary
The classic caffeine-metabolism literature studied CYP1A2 genotype as a modifier of coffee associations, not as a direct instruction for every person. Use it as one input.
Check rs762551 by raw-data provider
The marker question is the same, but the file names, download steps, and caveats vary by provider. Start with the guide that matches the raw DNA file you actually have.
23andMe rs762551
Look for CYP1A2 rs762551 in a downloaded 23andMe raw genotype file, with strand and informational-use caveats.
Open provider guideAncestryDNA rs762551
Check an AncestryDNA raw data export for the common CYP1A2 caffeine marker before interpreting the letters.
Open provider guideMyHeritage rs762551
Use a MyHeritage raw DNA data file to check whether rs762551 appears, then keep the result in context.
Open provider guideCYP1A2 rs762551 questions
Can I find CYP1A2 rs762551 in my 23andMe raw data?
Often, yes, but not always. Use the browser-only caffeine raw data checker to see whether rs762551 is present in your specific raw genotype file.
Does rs762551 prove I am a slow caffeine metabolizer?
No. rs762551 is widely discussed in caffeine-metabolism context, but a single raw genotype string should not be turned into a standalone rule. GenoSight keeps the free checker to marker presence and handles interpretation in the broader report.
Why might my raw genotype not match an article exactly?
Raw DNA providers and public resources can report variants using different strand conventions. That is one reason the local checker shows the raw value without translating it into a fast or slow label.
Which GenoSight report includes CYP1A2 caffeine context?
The Foods & Drinks report is the direct starting point for caffeine-related questions and currently fits inside the 250-credit no-card signup grant.