
MTHFR C677T/A1298C Mutations Detection









The MTHFR C677T/A1298C Mutations Detection test is a blood test that identifies genetic variations in the MTHFR (methylenetetrahydrofolate reductase) gene. These mutations can influence how the body processes folate and homocysteine, which are crucial for cardiovascular, neurological, and reproductive health. This test helps evaluate inherited risks for conditions associated with elevated homocysteine levels and impaired folate metabolism.













Understanding MTHFR C677T/A1298C Mutations Detection
MTHFR, or methylenetetrahydrofolate reductase, is an enzyme that plays a critical role in converting folate (vitamin B9) into its active form, which is necessary for proper DNA synthesis, methylation, and homocysteine metabolism. Mutations in the MTHFR gene, particularly C677T and A1298C, can reduce enzyme activity and disrupt these processes, potentially leading to elevated homocysteine levels in the blood. Elevated homocysteine is associated with an increased risk of cardiovascular diseases, pregnancy complications, and certain neurological conditions.
The MTHFR C677T/A1298C Mutations Detection test identifies genetic variations that affect folate processing and homocysteine levels, helping assess risks for cardiovascular issues, blood clots, and pregnancy complications.
This test is recommended if there are symptoms suggestive of hyperhomocysteinemia, recurrent pregnancy loss, a family history of cardiovascular disease, or unexplained blood clotting issues. It is also used to assess genetic predisposition in individuals with a history of stroke, heart attack, or vascular abnormalities. In addition, this test may be considered before or during pregnancy to guide folate supplementation and reduce the risk of neural tube defects in the fetus.
No special preparation is needed for getting the MTHFR C677T/A1298C Mutations Detection test done. However, it is preferred that you share your clinical history, current medications, and supplement use with your doctor before giving the sample, as these may influence the results.
Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Do not self-medicate and always consult a doctor to understand the test results correctly.
Please note: This is an outsourced test. The sample is collected by TATA 1MG and processed at a NABL accredited partnered lab.
What does MTHFR C677T/A1298C Mutations Detection measure?
The MTHFR C677T/A1298C Mutations Detection test detects specific changes in the MTHFR gene. The C677T mutation can reduce the enzyme activity significantly, especially if present in two copies (homozygous), leading to higher homocysteine levels. The A1298C mutation typically has a milder effect but can still impact folate metabolism, particularly when combined with the C677T mutation.
Identifying these mutations helps understand how efficiently your body processes folate and regulates homocysteine. Abnormal results may indicate a higher risk for cardiovascular problems, blood clots, pregnancy complications, or certain neurological conditions. Doctors may recommend dietary adjustments, folate, vitamin B12, and B6 supplementation, or closer monitoring based on test results.





FAQs related to MTHFR C677T/A1298C Mutations Detection
- Castiglia P, Sanna V, Azara A, De Miglio MR, Murgia L, Pira G, Sanges F, Fancellu A, Carru C, Bisail M, Muroni MR. Methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C polymorphisms in breast cancer: a Sardinian preliminary case-control study. Int J Med Sci. 2019 Jul 22;16(8):1089-1095. [Accessed 26 Sep. 2025]. Available from:
- MTHFR Gene Variant and Folic Acid Facts [Internet]. CDC; 27 May. 2025 [Accessed 26 Sep. 2025]. Available From:
- Molloy AM, Kirke PN, Troendle J, Burke H, Sutton M, Brody LC, Scott JM. MTHFR genotype and risk of neural tube defects: effect modification by folate intake. Circulation. 2015;132(1):52–59. [Accessed 26 Sep. 2025]. Available from:
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