Want to know if your active thyroid hormone is in balance?
Test your free T3 levels from home - simple, safe, and no referral needed.

hormones in a single test
correlation with clinical blood tests
business days to your personal report
What does free T3 do in your body?
Free T3 (triiodothyronine) is the active form of thyroid hormone. It's T3 that directly affects your cells - your energy, metabolism, heart rate, and body temperature. Your body converts T4 to T3, and if that conversion isn't working optimally, you can feel tired despite normal TSH levels.
What's included in Maybe Baby's hormone test?
Our test measures free T3 along with up to 11 other hormones for a complete picture of your hormonal health.
Home test - no hospital visit needed
Personal results report with clear explanations
Analyzed in ISO 15189-accredited laboratory
Results within 10 business days
How it works
Order online
Test kit delivered to your door in 2-3 days.
Fill in questionnaire
Answer a few questions so we can personalize your test.
Take sample at home
Simple finger-prick blood test. Send back in the included envelope.
Get your results
Personal report with clear explanations within 10 business days.
Maybe Baby vs. Fertility Clinic
| Maybe Baby | Clinic | |
|---|---|---|
| Test from home | ||
| No waiting times | ||
| Results within 10 days | ||
| Up to 12 hormones | ||
| ISO-accredited lab | ||
| Personal results report | ||
| Affordable |
We help women every day
From hormonal question marks to clear answers — here some of them share their experience.

Hanna
34 years

Anna
29 years

Mikaela
31 years

Hanna
34 years

Anna
29 years

Mikaela
31 years
“An amazing and incredibly important product! Easy to use and provided informative and clear information about my fertility. Highly recommend!”
“Apart from a slightly scary prick, the whole Maybe Baby experience was positive! The results were clear and easy to understand. The wait felt a bit long for me due to weekends and holidays, so it was also appreciated when you informed me about the delay.”
“Good instructions on how to perform the test, nice to have both a summary and more detailed information about the different parts of the results.”
“The most wonderful treatment and I still have great contact with you. So incredibly grateful for what you do. So happy that I got to experience the wonderful thing you've created.”
What will you learn from your free T3 result?
Hormone conversion
How well your body converts T4 to the active T3.
Energy levels
Whether T3 could be a factor behind fatigue or low energy.
Complete thyroid picture
T3 together with TSH and T4 provides the most comprehensive picture of your thyroid.
Next steps
Concrete recommendations based on your result.
Thyroid
Free T3 — Free Triiodothyronine
Think of free T3 as the active version - while T4 is the fuel in storage, T3 is the one that actually starts the engine and gets your body going.
What does it do?
T3 is the most active thyroid hormone. It's mainly formed when T4 is converted in the body's cells. Free T3 is the portion not bound to proteins that can directly affect cell function. It controls metabolism, energy production, and how fast your body works.
Why does it matter?
Measuring free T3 shows how well your body converts T4 to the active form. Some people have normal TSH and T4 levels but low T3, which can explain symptoms like fatigue and brain fog. T3 is an important piece of the thyroid puzzle.

Ready to learn more about your body?
Order your home test and get answers within 10 business days.
Order test