Description
SAMPLE TYPE: SALIVA
– 1 hour before: Do not eat, smoke, or brush your teeth.
– Avoid samples containing blood
– Rinse your mouth with water just before taking the sample
RESULTS: 20 DAYS
Results delivered from sample reception
The GNT. MTHFR evaluates variants of the MTHFR gene that affect the activity of the methylenetetrahydrofolate reductase enzyme, which is key in folate metabolism and in the conversion of homocysteine to methionine. Lower enzyme activity can raise homocysteine levels and affect cardiovascular, neurological, and reproductive processes.
Its objective is to identify the genetic predisposition to alterations in folate and homocysteine metabolism in order to guide personalized nutrition and prevention strategies.
Performing this test requires a medical prescription. The requesting healthcare professional must ensure that the patient receives appropriate genetic information and counseling, as well as the correct clinical interpretation of the results.
- Evaluation of hyperhomocysteinemia or family history thereof.
- Support in cardiovascular risk and cerebrovascular health.
- Fatigue, low mood, or conditions linked to folate metabolism (as support for differential diagnosis).
- Optimization of supplementation (active folate, B12, B6) in personalized nutrition programs.
MTHFR: C677T and A1298C variants
For more information, contact the Teletest administration department at 932 12 33 45 or through the following form

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