Energy Test

"Why am I so tired?"

This is a question we often ask ourselves as feeling fatigued or generally lacking in energy is a particularly common complaint. There are a host of reasons why you could be feeling lethargic, including anaemia, thyroid problems or low vitamin D levels.

Our private home energy finger prick blood test is designed to give you insight into some areas of your health that could be affecting your energy levels.

This test checks for:

  • TSH (indicating whether there is an issue with the thyroid function)
  • Vitamin D (a deficiency can lead to fatigue and weakness)
  • Ferritin (the best marker for iron deficiency)

It's an affordable private home test with results analysed in an accredited UK lab.

Test cost:
Test type: finger prick
Estimated turnaround
2 days
From receipt of sample

Why take an energy test?

  • You’ve been suffering from low energy, feeling weak and would like to get to the bottom of the cause
  • You’re already aware of a problem causing low energy levels and want to track the progress of key biomarkers over time to see how they have responded to relevant treatment or dietary changes
  • If you’re wondering “Am I anaemic?” or concerned about potential iron deficiency, this test will give you answers

Benefits of energy testing

When it comes to energy, many of us track things like how much we sleep and what we eat. But by taking an energy blood test you can get to the bottom of anything internally that might be contributing to low energy.

If you find you have high or low levels of TSH, Vitamin D or ferritin, you can then take the steps towards rectifying it and improving your energy levels.

Equally, our tests are beneficial to those already aware of an existing condition affecting their energy levels in order to track progress over time.

The energy blood test kit is a simple one taken at home. You then simply post your sample back to our lab and you’ll have your results in a couple of days. Our online dashboard will clearly show your results in a way that is simple to understand and also tracks changes over time.

Key benefits when using Forth testing

Fast & accurate

Fast & accurate analysis from accredited laboratory


Tests can be done at home


Secure access to online results

Online dashboard

Online dashboard which tracks results over time

Included in this test


Tested biomarkers
  • Thyroid Stimulating Hormone (TSH)

Vitamins & minerals

Tested biomarkers
  • Vitamin D (25 OH)
  • Ferritin

How it works

Collect sample

We will send you a finger prick kit to use at home

Post sample

Pop your sample in the post to us using a pre-paid envelope

Online results

View your results on your secure personal health dashboard

Other tests to consider
  • Advanced thyroid health


    Test type: finger prick

    An advanced look at the main thyroid hormones which indicate if the thyroid is functioning correctly.

    More info Add to basket
  • Nutri-check


    Test type: phlebotomy

    Is your diet supplying you with all the nutrients your body needs? Our nutrition test will identify deficiencies.

    More info Add to basket
  • Baseline


    Test type: finger prick

    Take control of your health by tracking 16 of the most essential biomarkers which play a vital role in your wellbeing.

    More info In basket
Test cost: £59.00

Estimated turnaround 2 days From receipt of sample

Test type: finger prick

Add to basket