Free Testosterone
Free testosterone is the go-getter of your hormone world, available and ready to boost mood, muscle, and libido.
About This Biomarker
Why We Test This
What Affects It
How to Improve
Understanding Your Results (pmol/L)
Low
(< 170 pmol/L)
Low free testosterone can feel like running out of gas in the middle of nowhere. It can lead to reduced muscle strength, less bone density, and a muted libido, affecting your overall zest for life. This is a crucial time to consult with healthcare pros to explore boosting your levels, possibly through therapy or lifestyle changes.
Optimal
(170 - 630 pmol/L)
Being in the sweet spot means your body’s key hormone for driving energy, strength, and sex drive is doing exactly what it should. It's like having your car’s engine running just right - smooth and efficient. This balance helps you feel your best, both physically and mentally.
Edging up to the high end of free testosterone might not be full alarm-bells territory, but it’s definitely a heads-up. You might start seeing signs like a bit more aggression or minor skin issues - signals to maybe ease off on things boosting your testosterone, whether that’s certain supplements or intense workout regimes.
Hovering near the low end isn’t a crash, but it’s a signal your body might not be firing on all cylinders. You might feel a bit more sluggish, a drop in gym performance, or a chill in your romantic life. It’s a nudge to possibly rev up your lifestyle habits - better diet, more sleep, or regular exercise
High
(> 630 pmol/L)
When free testosterone levels hit the high notes, it’s not all power chords and hero solos. This can lead to some less-than-rocking symptoms like oily skin, a breakout of acne, or unexpected mood swings. It can signal something more serious too, like an overactive adrenal gland or, more rarely, tumors that might be cranking up hormone production.
Also known as: Free Testosterone, Calculated Free Testosterone