Hormones & Performance

Sex Hormone Binding Globulin (SHGB)

SHBG is a transport protein that binds to sex hormones—mainly testosterone and estrogen—and controls how much is free vs. bound. High SHBG means less free testosterone is available (even if total T is normal). Low SHBG can increase free hormone, but may also signal insulin resistance, liver issues, or androgen excess. It’s a key marker for hormone bioavailability, and crucial for interpreting total vs. free T.

Unit
nmol/L
Health impacts
Mood · Libido

In your dashboard

Your trend, against your optimal range.

Male

Example data · how your trend would appear once you test

Female

Example data · how your trend would appear once you test

At every level

What we'd do at any value.

Exploring

40.0nmol/L

LowOptimal 20.0–60.0High

In your optimal zone

Habits that hold this position.

No specific guidance for this zone yet. We're working on it and will update this soon.

Order a test

Pick the lab that fits your day.

QuestTest code: 30740$14
BioreferenceTest code: 0658-5$28
LabCorpTest code: 082016$40
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For educational purposes; not a substitute for medical advice, diagnosis, or treatment.