Sore for three days after a workout that used to take one.
An at-home blood test for tiredness and fatigue. Find out which deficiency is slowing you down: four biomarkers, one finger prick. Results in 2 to 5 working days, in plain English, with a specific recommendation based on your numbers.
£119
Your results
Nothing here is a diagnosisRecommendation: Your next step, based on your numbers
2 to 5 working daysThe reality
You’re doing everything right.
Something’s still off.
You train. You eat well. You sleep. But your recovery has slowed, your energy tanks by mid-afternoon, and your joints ache in a way they didn’t two years ago.
You’re not injured. You’re not lazy. Something in your blood is holding you back, and guessing won’t fix it.
Symptoms
The data
A blood test for tiredness.
Four markers, four answers.
4 of 9 markers · see the full panel
Vitamin D
Most UK men are deficient between October and March. Low vitamin D directly affects muscle function, recovery speed, and energy. You can't tell from how you feel. You can only tell from your blood.
Active B12
Holotranscobalamin: the form of B12 your cells can actually absorb. Standard NHS B12 tests often miss deficiency. Active B12 catches it early. Low levels affect energy, nerve function, and how quickly you recover between sessions.
hs-CRP (inflammation)
A high-sensitivity inflammation marker. If this is elevated, your body is dealing with inflammation it isn't clearing. In active men, this is often linked to joint and connective tissue stress.
Ferritin
Your iron stores. Low ferritin is one of the most common and most overlooked causes of fatigue in men. If your energy has dropped off a cliff, this is often why.
The process
Five minutes.
No GP needed.
Order
Dispatched same day. Fits through your letterbox.
Collect
A simple finger-prick sample you can do at the kitchen table.
Return
Drop it in a postbox using the prepaid return envelope.
Read
Your results appear in your private dashboard within 2 to 5 working days. Clear, specific, and in plain English.
Some results need a doctor
Low ferritin, for example, goes to a GP and earns us nothing.
The rest get a plain-English reading, and what we offer alongside it is the same whether your numbers are flagged or fine.
Questions
Frequently asked questions
Does it hurt?
It's a quick prick on the fingertip. Most men say it's painless. We include extra lancets just in case.
How long do results take?
Most results are ready within 2 to 5 working days of the lab receiving your sample. Some can take a little longer, depending on sample quality, postal transit and lab workload.
Does the £119 cover everything?
Yes. The kit, the lab analysis for all four biomarkers, the prepaid return postage, and access to your results dashboard are all included.
Is my data private?
Your results are private to you, in your own dashboard. We do not sell your data, and we do not share it for advertising. You choose who sees your numbers.
Can I test testosterone as well?
This kit focuses on energy, recovery, and inflammation. If you also want testosterone checked, Kit 3 includes everything in this kit plus the full testosterone panel (Total T, SHBG, Free Androgen Index (FAI), Albumin, and Free T) for £179.
I already take supplements. Is this still worth it?
Especially if you already take supplements. Most men are guessing which ones they need. This test tells you which deficiencies you have, so you stop spending money on things you don't need.
Related reading
The markers behind low energy and slow recovery, explained in plain English.
Energy & Recovery
Why Am I Always Tired? The Lifestyle Causes (and When to Get Checked)
Most persistent tiredness in otherwise-healthy men comes down to a short list of everyday inputs, not illness. Here's what's draining you, what to change this week, and the honest line for when tiredness is worth seeing a doctor.
Read the guideEnergy & Recovery
Low Vitamin D Symptoms: The UK Guide for Men
What low Vitamin D actually feels like in UK men, the NICE nmol/L thresholds, and what to do with the number. Reviewed by GMC-registered GP Dr Ewa Lindo.
Read the guideEnergy & Recovery
B12 Blood Test: Total vs Active B12, Explained
What a B12 blood test measures, why active B12 (holotranscobalamin) matters more than total, and how to read your number. Reviewed by GMC-registered GP Dr Ewa Lindo.
Read the guideEnergy & Recovery
Ferritin Blood Test: What Your Iron Stores Mean
What a ferritin blood test measures, what counts as low or normal for UK men, and why a low result is a GP conversation. Reviewed by GMC-registered GP Dr Ewa Lindo.
Read the guideInflammation & Recovery
CRP Blood Test: What the Number Means
What a CRP blood test measures, what counts as high in the UK, and what to do with the number. Reviewed by GMC-registered GP Dr Ewa Lindo.
Read the guideInflammation & Recovery
Inflammatory Markers Blood Test: What They Reveal
What an inflammatory markers blood test measures, what counts as high in the UK, and what to do with the number. UK-specific, reviewed by a GMC-registered GP.
Read the guideStop guessing why you’re tired.
Find out.
A finger prick. A prepaid envelope. That’s it.
One-off purchase. Results in your personal dashboard. No GP needed.
Want the full picture? Kit 3 adds the complete testosterone panel to everything in Kit 2: nine markers for £179.
See Kit 3: £179