Nutritional Tests  Genetics
CardioMetabolic Tests   Programs

MTHFR Genotyping

Overview

MTHFR is an enzyme responsible for converting 5,10-methylenetetrahydrofolate to the product 5-methyltetrahydrofolate - it is involved in the metabolism of folate and homocysteine. The product of the reaction catalyzed by MTHFR converts homocysteine (a potentially toxic amino acid) to methionine (a useful and necessary amino acid).

Why is MTHFR Genotyping Important?

  • Certain mutations in the gene coding for MTHFR produce an enzyme that has reduced activity.
  • Reduced activity can lead to elevated levels of homocysteine (a.k.a. hyperhomocysteinemia), especially when folate levels are low.
  • High homocysteine (>13umol/L) may double the risk of developing illness or complications.
  • MTHFR genotyping can provide information about potential causes of elevated homocysteine and approaches for addressing it.
  • Based on MTHFR and homocysteine results, physicians can develop dietary and medical recommendations - increased intake of folate alone or in combination with vitamins B6 and B12 are recommended.
  • Based on results, recommendations for methotrexate dosage can be adjusted.

Risks Associated with MTHFR Variants/High Homocysteine:

  • Cardiovascular Disease
  • Cerebral Vascular Disease (Stroke)
  • Venous and Arterial Thrombosis
  • Methotrexate Toxicity for Cancer Therapy

Who Should be Tested?

  • Those with high homocysteine levels.
  • Those who have a familial history of cardiovascular disease, stroke or thrombosis.
  • Those who are candidates for long-term methotrexate therapy.

Components

What Are the Variants?

What Are the Possible Genotypes?

 

Collection/Packaging Instructions

***No FASTING REQUIRED***

  1. Whole blood is required.
  2. Collect one purple top (EDTA) tube.
  3. Do no centrifuge or freeze

Shipping Instructions

  • Ship in the LPP kit or the micronutrient test kit provided
  • DO NOT PLACE THE SHIPMENT IN A DROP BOX
  • DO NOT USE THE AUTOMATED SYSTEM WHEN CALLING FOR A PICK UP.  SPEAK WITH A CUSTOMER SERVICE REPRESENTATIVE.
  • It is very important to receive the specimens the day after collection
  • Call FedEx for courier pickup ASAP at 800-463-3339, but no later than 3:00PM, Monday-Friday
  • Give your address as the pickup location
  • THE LABORATORY IS OPEN ON SATURDAYS TO RECEIVE SPECIMENS COLLECTED ON FRIDAYS 

Report Delivery

Results are typically available within 7-10 business days.

Reports are delivered via general mail or electronically (read below for details). 

To reduce delivery time and paper filing of your reports, you can now register for electronic report delivery Register by Filling out this form

*HIPAA aware: Electronic delivery system is completely confidential and secure.

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