Targeted Single-Marker Tests
Testosterone Test
Also known as: Free testosterone
Libido, mood, metabolism, muscle, and hair — in women and men.
Testosterone matters for both women and men. It supports libido, mood, metabolism, muscle, and hair, and the free form is what your tissues actually use.
What it measures
What's measured
- Free testosteroneThe active, unbound testosterone your tissues use.
Who this is for
A focused check when drive, libido, or muscle tone has changed.
- Low libido
- Low drive
- Loss of muscle
- Hair changes
- Low mood
Two ways to get the Testosterone Test
Lab Only
Available to program members — ordered and reviewed by Tiffeny.
Personalized with Tiffeny
RecommendedWant your results personally reviewed?
- One-on-one interpretation of your results
- Written Root Cause Report
- Personalized 12-week protocol
✦ Members receive exclusive pricing on multi-lab orders. See member perks →
Labs are processed by a CLIA-certified laboratory partner. To protect your privacy, I can only see your results if you add Tiffeny Parker as your practitioner.
What results can reveal
- High or low free testosterone
How we interpret it
We read every panel through a functional lens — optimal reference ranges, ratios, and cross-panel patterns. Results become part of your written Root Cause Report and your personalized 12-week protocol.
Zinc is essential for testosterone, so we read this result alongside your HTMA zinc level.
Often paired with
Common questions
Not sure which panels you need?
Start with the Root-Cause Fit Assessment. Takes about 3–5 minutes. If it looks like we're a good fit, you'll be invited to schedule a 45-minute consultation to discuss your health history, goals, and whether this program is the right next step for you.
Educational information only. Functional lab testing is not intended to diagnose, treat, cure, or prevent any disease. Results are reviewed in the context of your full health history.