Free MTHFR analysis
Free MTHFR analysis from the DNA test you already took
If you have tested with 23andMe, AncestryDNA or MyHeritage, you don't need to buy a separate MTHFR test. Your raw data already contains C677T and A1298C. Upload it and NutraHacker's free Detoxification and Methylation Report shows your MTHFR status, explains it, and covers 56 more methylation and detox SNPs.
What the free report shows for MTHFR
| Variant | Typical | One copy | Two copies |
|---|---|---|---|
| C677T (rs1801133) | CC: normal enzyme activity | CT: about 65% of normal activity | TT: about 30% of normal activity; homocysteine tends to run higher, especially with low folate or riboflavin |
| A1298C (rs1801131) | AA: normal | AC: mild effect | CC: mild effect; matters most combined with one copy of C677T |
For each variant you see your genotype, what MTHFR does, what your result means, how common it is and possible mitigation strategies. The same report covers MTR, MTRR, COMT, CBS and other genes in the methylation and detox pathways, 58 SNPs in all, because MTHFR rarely tells the whole story on its own.
What your MTHFR result means
MTHFR makes the enzyme that turns folate into methylfolate, which recycles homocysteine and feeds the body's methylation cycle. C677T makes the enzyme less stable; two copies (TT) reduce its activity to roughly a third of normal. Around 10–15% of people of European descent are TT.
That sounds dramatic, but it is common and often harmless with a good diet. Many claims online go further than the evidence: MTHFR variants on their own are not considered a cause of blood clots, and testing them to explain clots is not recommended. The useful next step is a homocysteine blood test, which shows whether your folate cycle is actually under strain. Read the full MTHFR gene guide for the evidence.
What people with MTHFR variants often look at
- Folate from food, such as leafy greens and legumes, and whether methylfolate suits them better than folic acid.
- Riboflavin (vitamin B2), which the enzyme needs; in TT carriers, a low dose lowered homocysteine.
- Vitamin B12 and B6, which work in the same cycle.
- Choline, the body's other route for recycling homocysteine.
Talk to your doctor before changing supplements, especially in pregnancy. For personalized vitamin and supplement guidance, the optional Complete Mutation Nutrition Report ($37 one time) goes further.
How to get your free MTHFR analysis
- Download your raw data file: 23andMe, AncestryDNA, MyHeritage.
- Unzip it and upload the .txt or .csv file. It takes about 3 minutes.
- Open the Detoxification and Methylation Report in the Report Center.
Comparing free options? Genetic Genie also lists MTHFR genotypes for free; see how the two compare on our Genetic Genie alternative page, or browse free DNA upload sites.
Frequently asked questions
Can I get a free MTHFR test?
If you have already taken a DNA test with 23andMe, AncestryDNA, MyHeritage or a similar company, yes. Your raw data file contains both common MTHFR variants, and NutraHacker reads them for free when you upload it.
Which MTHFR variants does the free report check?
C677T (rs1801133) and A1298C (rs1801131), the two common variants, plus 56 other methylation and detox SNPs in genes such as COMT, MTR, MTRR and CBS.
Why don't the letters in my raw data file match C677T?
MTHFR is read from the opposite DNA strand to the one consumer files report. For rs1801133, G/G in your file means CC (typical), A/G means CT and A/A means TT. The report translates this for you.
Is an MTHFR variant a diagnosis?
No. MTHFR variants are very common and often harmless. They are best read alongside a homocysteine blood test and discussed with your doctor before changing supplements.
Do I need to buy anything to see my MTHFR result?
No. The Detoxification and Methylation Report is free with every upload. Optional reports, such as the Complete Mutation Nutrition Report, are one-time purchases.