Compare Our Blood Test Panels

Click through to view details for each panel and the tests included. Most tests require venous blood sample collection, which can be done at St Thomas’ Hospital or at a clinic of your choice.

Find out more about how it works >

This quick vitamin B12 test measures Total B12 and Active B12, both of which are needed for healthy nerves, brain function and red blood cells. This test has a next day turnaround*.

Total B12
Active B12

A comprehensive vitamin B12 test panel including Total B12, Active B12, and methylmalonic acid (MMA). MMA is considered the closest to a gold standard available for detecting B12 deficiency.

Total B12
Active B12
Methylmalonic Acid (MMA)

An extended vitamin test panel to support investigation of your vitamin B12 and folate (B9) status, both of which are required to maintain a healthy nervous system.

Active B12
Methylmalonic Acid (MMA)

Investigate the cause of fatigue and low energy levels. Our extended vitamin blood test panel tests for key markers that are linked with fatigue and anaemia.

Active B12
Vitamin D

Discover if you are vitamin D deficient or check that your supplements are working with our vitamin D2 and vitamin D3 blood test, determined by liquid chromatography-tandem mass spectrometry.

Vitamin D2
Vitamin D3

Find out your vitamin K status with our blood test panel. Vitamin K plays an important role in cardiovascular and bone health.

Vitamin K

Measure your levels of fat-soluble vitamins A, D, E and K with our blood test panel.

Vitamin A
Vitamin E
Vitamin K

Our ultimate B vitamins blood test panel - includes an extended B12 test panel with Fedosov Factor which is the novel vitamin B12 wellbeing score, as well as vitamins B1 B2 and B6.

Thiamine (B1)
Riboflavin (B2)
Vitamin B6
* Important: Please note that turnaround time is measured from when the blood sample is accepted in to the Viapath laboratory and does not include weekends or bank holidays. Samples must arrive at the laboratory before 12pm for next-day turnaround. Samples received after 12pm will be turned around within 2 working days.

How It Works


Choose a test panel

Select from our ever-growing range of nutritional laboratory tests without a clinician/physician’s referral.


Have your blood collected

Choose to either have your blood taken at the Blood Test Centre at St Thomas’ Hospital or receive a postal pack and have blood drawn by a qualified professional in a clinic of your choice.


Access your report online

Log in to your secure Viapath Nutris account to access your laboratory report with commentary from a registered healthcare scientist.