Vitamin B12 Active (Cobalamin)

£55.00

4.9/5 from 131+ verified Google reviews

Tests for essential nutrients and diet-related factors.

Overview

The Vitamin B12 Active (Cobalamin) test is a precise blood screening that measures the biologically active form of vitamin B12, known as holotranscobalamin (holoTC). Unlike total B12 measurements, this test assesses the functional, cell-available fraction of B12, providing an earlier and more reliable indicator of deficiency. Vitamin B12 is crucial for red blood cell production, neurological health, DNA synthesis, and homocysteine metabolism. Early detection of low active B12 levels can prevent irreversible nerve damage, anemia, cognitive decline, and cardiovascular risks associated with elevated homocysteine.

Key Test Components

Active Vitamin B12 Markers

Active Vitamin B12 (Holotranscobalamin / Cobalamin)

Sample Requirements

Sample Type:

Venous blood sample drawn

Fasting Required:

Not required (can be done at any time)

Why You Might Need This Test

Symptoms:

Persistent fatigue, weakness, or unexplained anemia
Numbness, tingling, or "pins and needles" in hands and feet
Difficulty with balance, walking, or coordination
Memory problems, confusion, irritability, or depression
Glossitis (inflamed tongue) or mouth ulcers

Health Screenings:

Family & Medical History:

Ongoing Monitoring:

Can’t Find Your Test?

If you can’t find the test you’re looking for, simply give us a call and our support team will guide you to the right option. We’re here to ensure you get the correct test quickly and confidently.

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Testimonials

Customer Testimonials

Amazing service, had my blood taken by Sarah, so quick and convenient. I will be using Swift bloods again and will be recommending to my friends and family. Sarah was. Very professional also friendly, she was really lovely. Swift bloods are definitely the way to go.Thank you very much .

First Class Service
Friendly and helpful staff. Arranged an appointment for the next day at home. Joanne arrived for my appointment to take the required blood tests and delivered them to my local hospital within 35 minutes. I cannot recommend Swift Blood Tests highly enough.

I can’t praise this company enough! Jo arrived on time and was so lovely, easy to talk to and efficient. The whole process from booking the appointment ( and getting one for the following day) to receiving a text that the bloods had arrived at the hospital was really impressive. I would recommend her to anyone and will definitely use this service again-

This is an amazing service which I heard about through a recommendation and I will 100% be recommending to friends. I booked in late one even and Joanne came early the next morning. I work in London so this was perfect to work around unusual business hours. Joanne was so efficient and friendly. Thank you!

Organised a visit for my disabled elderly mother. Trying to get a local appointment through the NHS swift queue system would have meant several weeks wait. This service was booked online within minutes and the service was prompt, efficient and very professionally carried out by a friendly nurse