because prevention is better than cure.

because prevention is better than cure.

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Homocysteine (Hcy)

£49.95 or subscribe and save up to 6%


This measures methylation, your need for B vitamins. Faulty methylation damages the brain and circulation and is the single best indicator of cognitive health. Homocysteine goes up when methylation is impaired, indicating a greater need for B vitamins, especially B6, B12 and folate.

Lowering homocysteine has been shown to reduce brain shrinkage by up to 73% in those with adequate omega-3 DHA. A lower homocysteine level is associated with less cardiovascular and stroke risk, osteoporosis, depression, cognitive decline. Homocysteine is a biomarker for over 100 diseases, especially mental and neurological diseases. You can have raised homocysteine due to poor B12 absorption.The only way to know is to test.

Above 11 µmol/L is associated with accelerated brain shrinkage. 7 µmol/L or less is probably optimal. We recommend supplementation with B vitamins if your level is over 10 µmol/L.

How the test works

PLEASE NOTE The test requires a fasted blood sample.  Perform the test first thing in the morning after 12 hours of fasting i.e. no food or drinks.

For more information read the FAQs here.

Email with any questions you have.


188 in stock

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What’s in the kit?

Enrollment with the purchase of a Homocysteine blood spot test kit includes:

  • 2-3 lancets
  • Blood spot card(s) for the tests ordered
  • 1 envelope for returning your blood spot card
  • 1 gauze pad, 1 band aid, and 1 alcohol swab

When you order your kit, you will also be participating as a citizen scientist in the world’s most comprehensive Alzheimer’s prevention project. You will be invited to retest your Cognitive Function every six months, and encouraged to reduce your Dementia Risk Index by joining COGNITION, the ‘brain upgrade’ program. This takes you through a six month cycle to motivate simple diet and lifestyle changes to reduce your Dementia Risk Index.

You may choose to retest every 3 months, 6 months or year and, can, at anytime, change your order. For example, if you bring one test into the ‘green’ on the DRIfT section of your DASHBOARD you may only wish to retest other important biochemical markers. If you have selected a retest option we’ll remind you.

Included in the Homocysteine test kit is:

  • 2 lancets
  • 1 Homocysteine blood spot card
  • 1 envelope for returning the card
  • 1 gauze pad, 1 band aid, and 1 alcohol swab

Additional information

Weight 500 g
Dimensions 1.0 × 1.0 × 1.0 cm