Home kit
Free Testosterone Test
Total testosterone, SHBG and albumin, with a calculated free testosterone — the part your body can actually use — from a morning sample you collect at home.
Everything you need to know about Free Testosterone Test
Testosterone affects energy, mood, libido, muscle, bone and how your body stores fat. Most of it travels in the blood tightly bound to sex hormone binding globulin (SHBG), with some loosely attached to albumin; only a small free fraction is active. When SHBG is high — which becomes more common with age — total testosterone can look normal while the amount your body can use is low.
This kit measures total testosterone, SHBG and albumin and calculates free testosterone, so you can see both numbers. Testosterone is highest in the morning and varies from day to day, which is why a low result should always be confirmed with a repeat morning sample. Our clinical team explains your results and when a conversation with your GP or a specialist makes sense.
What's included
4 markers in this test
Worth considering if
- Low energy, low libido, erectile difficulties or low mood
- Difficulty building or keeping muscle despite training
- A previous “normal” testosterone result but ongoing symptoms
- Checking levels before or during a weight-loss programme
Your home kit
Order online
Add the kit to your order — several kits can go in one order — and enter your delivery address. We post it to your door as soon as your payment reaches us, with free delivery.
Collect your sample at home
Follow the step-by-step instructions in the box. Collect between 7am and 11am, ideally before breakfast. Stop biotin supplements 48 hours before. Post the sample back the same day, Monday to Thursday, in the return packaging provided.
Results explained
Your results are released to your account with a written explanation from our clinical team.
Free Testosterone Test — FAQs
Why does the timing matter?
What is the difference between total and free testosterone?
What if my testosterone is low?
I am on testosterone therapy — is this the right kit?
How does the kit reach me?
How do I collect the sample?
When should I post my sample back?
Can I order several kits at once?
How do I pay?
How do I get my results?
Often ordered together
Add several kits to one order — one payment, posted together.





