DNA test for MTHFR and COMT
The best DNA test for MTHFR and COMT gives you raw data.
If your goal is to check MTHFR C677T, MTHFR A1298C, and COMT Val158Met, the brand name matters less than three things: raw data download, marker coverage, and whether your interpretation tool accepts the file.
GenoSight does not sell DNA kits. It analyzes compatible raw DNA files for educational reporting and does not provide medical advice.
Minimum markers to verify
Exact rsIDs beat vague kit claims.
MTHFR C677T
rs1801133The marker most people mean when they ask about MTHFR C677T.
MTHFR A1298C
rs1801131Often checked alongside C677T for a more complete MTHFR first pass.
COMT Val158Met
rs4680The common COMT marker behind many Val158Met, V158M, and +/- discussions.
How to compare kit options
A kit can be famous and still be a poor fit if it does not let you download a usable raw file. Start with the workflow you want after the test arrives.
23andMe
Commonly supported by third-party raw-DNA tools
Raw data downloads can take time and are informational, not medical or diagnostic output.
AncestryDNA
Broadly recognized raw-data format
Download support exists, but chip coverage and exact marker calls can vary by kit version.
MyHeritage
Often discussed for current consumer-tier marker coverage
MyHeritage itself warns that third-party compatibility depends on the destination platform.
Whole-genome sequencing
More comprehensive raw data when you need more than SNP-chip markers
Usually costs more and GenoSight does not currently accept FASTQ, BAM, or WGS VCF files.
Buy for the data, not the label.
If a test only gives you a branded report, you are stuck with that company's interpretation. A raw file gives you a second pass, a marker check, and a better question list.
Choose a kit that lets you download raw genotype data, not only a closed report.
Check whether your intended tool accepts the provider format before you buy.
Keep the original provider ZIP untouched, then upload only an extracted text or CSV copy; do not resave it through Excel or Sheets.
Treat missing markers as missing data, not as normal results.
Pair supplement questions with labs and clinician context instead of genotype alone.
Already have a raw DNA file?
Upload a compatible 23andMe, AncestryDNA, or MyHeritage file to run an educational Detox & Methylation report. The signup grant includes 250 credits, enough for the first report.
Source notes
23andMe raw data access
23andMe explains raw-data access, download timing, ZIP/TXT output, and informational-use limits.
AncestryDNA raw data download
Ancestry explains downloading raw DNA data, text/ZIP output, rsID columns, strand notation, and security caveats.
MyHeritage raw data download
MyHeritage explains raw-file download steps and notes that third-party compatibility varies by platform.
MTHFR and COMT test questions
What DNA test should I buy for MTHFR and COMT?
For a consumer raw-data workflow, prioritize raw data download capability and coverage of MTHFR rs1801133, MTHFR rs1801131, and COMT rs4680. 23andMe, AncestryDNA, and MyHeritage files are common starting points, but chip coverage and third-party compatibility can change.
Does GenoSight sell DNA test kits?
No. GenoSight analyzes compatible raw DNA files you already downloaded from a supported provider. It does not sell collection kits or replace clinical genetic testing.
Can I use MyHeritage raw data for MTHFR and COMT?
Often yes, if the raw file is compatible and contains the markers you care about. The important step is checking marker presence and file support before relying on any interpretation.
Is whole-genome sequencing better for MTHFR and COMT?
Whole-genome sequencing can contain more data than a consumer SNP chip, but it is more expensive and more complex. GenoSight currently focuses on compatible 23andMe, AncestryDNA, and MyHeritage raw genotype files.
Can an MTHFR or COMT test tell me what supplements to take?
No consumer raw DNA result should be treated as a supplement protocol. Use genotype as a clue alongside labs, symptoms, medications, pregnancy status, and clinician guidance.