Free rsID lookup
Look up any rsID in your raw DNA
Read about a SNP somewhere and want to know what you carry? Choose your raw DNA file, paste one or more rs numbers, and see your letters for each. Genotype only: where we have published a guide to that SNP, it links there.
It runs in your browser. Your file is never uploaded, there is no account, and it is free. We count that a lookup ran and how many rs numbers were asked, never which ones or your letters.
Choose or drop your raw DNA file
.txt · .csv · .zip · .vcf · .vcf.gz
Run the full analysis on this file
The free DNA report reads the same file for ancestry across 15 world regions, traits, medication genes and both family lines. Your DNA story opens straight away with no account; the full report opens after a code sent to your email.
Questions
How do I look up a specific rsID in my 23andMe raw data?
Choose the file on healthosx.com/dna/lookup, paste the rs numbers, and it shows your two letters and the position for each, read in your browser. It works for 23andMe, AncestryDNA, MyHeritage, FamilyTreeDNA, Living DNA and WeGene files and annotated VCFs. Free, no account, never uploaded. You can also open the .txt in a text editor and search for the rsID.
Why does it say “not in your file”?
Each chip tests its own few hundred thousand positions, so most rsIDs aren’t on any one chip. A VCF lists where you differ from the reference, so a missing rsID there usually means you carry the reference letters.
Why doesn’t it tell me what my genotype means?
Because most SNPs have no reliable meaning on their own, and inventing one on request would be the confident nonsense raw-data tools are known for. Where we have published a guide to a SNP, the result links to it, and the free report at /dna interprets the positions it has checked.
Which strand are the letters on?
The one your file uses. 23andMe and AncestryDNA report the forward (+) strand of the reference genome. Papers sometimes name the other strand’s letters, where A pairs with T and C with G.