Our Endurance blood test subscription is specifically designed for triathletes, cyclists and long distance runners. It brings together a whole range of biomarkers that enable athletes to optimise their training. These include markers relating to oxygen carrying capacity, immune function, fatigue, recovery and over training.

As a standard part of this profile, you’ll get:

  • Creatine Kinase (CK) blood test
  • Haematocrit (HCT blood test)
  • Over a dozen additional markers

The results of this blood test will help you to identify the cause of any dips in athletic performance, giving you insight into when to reduce activity level or improve your diet and nutrition.

Our Endurance profile is the ideal blood test for those looking to optimise their athletic performance and fitness or simply for those who want to ensure their body’s key endurance markers are just where they should be.

This is a home finger prick subscription test, so we send you a test every 1, 2 or 3 months (your choice) and you simply provide a sample and send it back.

This profile is perfect for triathletes, distance runners and cyclists looking to understand and improve endurance.

Test cost:
per test
Test type: finger prick
This a subscription package and you will receive a new test kit at the duration of your choice (every 1, 2, or 3 months). Subscription can be cancelled online at any time.
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Estimated turnaround
2 days
From receipt of sample

Key benefits when using Forth’s tracking service

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
  • White Blood Cell Count (WBC)
  • Red Blood Cell (RBC)
  • Mean Corpuscular Volume (MCV)
  • Mean Cell Haemoglobin (MCH)
  • Haemoglobin
  • Haematocrit (HCT)


Tested biomarkers
  • hs-CRP


Tested biomarkers
  • Urea
  • eGFR
  • Creatinine


Tested biomarkers
  • Thyroid Stimulating Hormone (TSH)
  • Testosterone (total)
  • Cortisol (9am)


Tested biomarkers
  • Creatine Kinase

Vitamins & minerals

Tested biomarkers
  • Vitamin D (25 OH)
  • Sodium
  • Folate (serum)
  • Ferritin
  • Chloride
  • Active B12

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


See how a simple test can improve your performance...


Other tests to consider
Test cost: £99.00 per test

Estimated turnaround 2 days From receipt of sample

Test type: finger prick

Add to basket