Vitamin B12 Test - Verisana Lab

Vitamin B12 Test

99.00£ Incl. VAT/Sales Tax & FREE Shipping - Original Price 99.00£


With the Vitamin B12 Test, we determine your holotranscobalamin level using a simple blood sample.

Availability: deliverable immediately
  • Details
  • Test measures
  • Symptoms
  • Sample collection guide
  • Sample report
  • Reviews
Who should take the test?

In the UK, up to 6% of the population under age 60 and up to 20% over age 60 do not reach the recommended intake of vitamin B12. The body needs the vitamin for various processes, for example for nerve function and cell division. Therefore, deficiency symptoms affect many areas of the body. The body can only utilize the active vitamin B12 (holotranscobalamin), which is bound to special transport molecules. Our Vitamin B12 Test measures your holotranscobalamin status.

The Holo-TC value detects in the early stages whether a deficiency is present or not and is therefore the most reliable and sensitive test to detect a vitamin B12 deficiency.

How does it work?

You collect the sample at home, send it back to us and we will send you your result with information about your holotranscobalamin level. You will find out whether your values are within the normal range or whether there is a deficiency.

What will my results tell me?

Your report will contain detailed information about your holotranscobalamin level and whether it is normal or too low (compared to the respective reference range for your age group). You can then discuss these results with your doctor, who can advise you on how to proceed and on the various therapy options.

What guidance will I get along with my results?

We always recommend the discussion of the mailed results with your doctor or practitioner. Besides, further information is available on our website, especially in the different test categories, under “health conditions” and the FAQs. Still have questions? Then you can contact us by mail at

Test measures
For the Vitamin B12 Test we analyze:
  • Holotranscobalamin

Vitamin B12 is a water-soluble vitamin also known as cobalamin. It belongs to the essential vitamins. Essential means that the body cannot produce it itself. We have to absorb it through food. The body needs the vitamin for various processes, for example for nerve function, cell division and blood formation. Therefore, deficiency symptoms affect many areas of the body. The body can only utilize the active vitamin B12, which is bound to special transport molecules. It is exactly this holotranscobalamin that our vitamin B12 test measures.

Symptoms the Vitamin B12 Test is suitable for:
  • Lack of concentration, memory impairment
  • Hair loss
  • Degeneration of the optic nerve
  • Disturbance of nerve sensitivity
  • Muscle weakness
  • Depressed mood
Sample collection guide

Please read the following instructions in detail, before starting with the sample collection.

Please download the instructions here

Sample report
The sample report

Below you will find the sample report for the Vitamin B12 Test.

Download sample report


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Any Questions?

Here are some of the most frequently asked questions regarding this test. Your question is missing? Please contact us at:

Why is vitamin B12 important?

Vitamin B12 is essential for various bodily processes, including nerve function and cell division. Deficiency in vitamin B12 can lead to a range of symptoms affecting different areas of the body.

What is holotranscobalamin (Holo-TC)?

Holotranscobalamin is the active form of vitamin B12 bound to special transport molecules in the blood. Measuring Holo-TC provides a more accurate assessment of vitamin B12 status than measuring total vitamin B12 levels alone.

What factors can increase the risk of vitamin B12 deficiency?

Increased need, e.g. due to pregnancy/breastfeeding, impaired absorption of B12 in the intestine (e.g. due to chronic inflammatory bowel diseases or celiac disease), vegetarianism/veganism, intake of certain medications: omeprazole (for heartburn and gastric ulcer), metformin (for diabetes).

How much vitamin B12 do you need?

The average daily requirement for adults for vitamin B12 is about 4 µg.

What contains vitamin B12?

The only relevant source for humans are animal-based foods (fish, meat, dairy products, eggs). Therefore, vegans and vegetarians should supplement the vitamin accordingly and have their blood levels checked regularly.

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