Vitamin B12 Home Blood Test Kit

A single-marker blood test measuring active vitamin B12, suited to people at risk of deficiency, including vegetarians and vegans.

At-home test
Doctor reviewed

Sample: Blood
Collection: At-home finger-prick kit or at-home AutoDraw device or home nurse visit or venous draw at a partner
Results in: 2 days
Biomarkers: 1
Doctor reviewed: Yes

Tests for

Active B12

Compare Health Test Score Priced above the median for active B12 tests we track

£50.00

Buy now — £50.00

We may receive a commission on purchases. Prices are updated regularly but may vary.

Test specifications

Provider: Forth
Sample type: blood
Collection method: at-home finger-prick kit or at-home AutoDraw device or home nurse visit or venous draw at a partner
Turnaround time: 2 days
Biomarkers tested: 1
At-home test: Yes
Doctor reviewed: Yes
Gender focus: Both

What's tested

1 biomarker as listed by Forth.

B Vitamins Profile

Active B12

About this test

Vitamin B12 is important for energy, brain function and nerve health, and low levels are commonly linked to fatigue and memory problems. This test measures active B12 specifically, a marker some providers consider more sensitive than total B12, and is aimed at people who want to check this one marker, including vegetarians and vegans who are at higher risk of low levels.

Among the eight B12 tests we track, this sits slightly above the group median: £50 against £46. Medichecks' Vitamin B12 (Active) Blood Test and London Medical Laboratory's Vitamin B12 test both cost £39 for the same active B12 marker, and Blue Horizon Medicals offers active or total B12 versions at £45.25 each. Randox Health's Quickdraw version costs £46, matching the group median.

value for money is the weakest part of the score, 9% above the group median for a marker several peers measure for less. Collection is flexible across four methods, and results are reviewed by a doctor within 2 days.

Who is it for?

This suits you if you want a quick, doctor-reviewed check of your active B12 level and are happy to pay a modest premium for Forth's collection options. If price is the main factor, Medichecks or London Medical Laboratory offer the same active B12 marker for £39.

How it works

Collect your sample using an at-home finger-prick kit, Forth's AutoDraw device, a home nurse visit, or a venous draw at a partner clinic. The lab measures your active B12 level, and a doctor reviews the result before it is released to you. Results are typically available within 2 days.

Pros & cons

Pros

Results reviewed by a doctor within around 2 days.
Finger-prick, AutoDraw, nurse visit or clinic draw all offered.
Measures active B12, useful if you want a marker some providers treat as more sensitive than total B12.

Cons

£50 is 9% above the £46 median price for B12 tests we track.
Medichecks and London Medical Laboratory offer the same active B12 marker for £39.

Our editorial score

Compare Health Test Score Priced above the median for active B12 tests we track

Editorial confidence: 10.0/10

Score breakdown

Clarity and documentation 8.0/10

The listing publishes a short description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.
Clinical depth 7.5/10

A single-marker test measuring exactly what it sets out to; depth is not the point of this comparison group.
Collection convenience 10.0/10

Can be done at home; with a venous or clinic option as well; a home nurse visit is offered; results within 2 days.
Results and follow-up 8.5/10

Results are reviewed by a doctor.
Trust signals 8.5/10

Trustpilot 4.2 from 1,727 reviews; accredited lab (UKAS ISO 15189 partner labs); doctor review as standard; trading 10+ years.
Value for money 5.9/10

£50.00 against a comparison-group median of £46.00 (+9%).