Sex Hormone Binding Globulin

This protein is produced by the liver, controlled by sex hormones, thyroid hormones, insulin, and dietary factors and binds to sex hormones – testosterone, DHT (dihydrotestosterone), and oestrogen (estradiol). It helps transport them in the blood. SHBG levels, which change with age, vary between men and women, and can help control the levels of androgens and oestrogens in the body. It can help to determine testosterone levels in the blood, since around 40-60% of total testosterone is bound to SHBG in men.

Available Tests

FDX 00


Full Biomarkers +
FDX 34


Full Biomarkers +
FDX 21


Full Biomarkers +
FDX 03


FDX 32


Full Biomarkers +
FDX 18


FDX 26


Full Biomarkers +
FDX 25


Full Biomarkers +
FDX 33


Full Biomarkers +
FDX 19


Full Biomarkers +

Patient Test Info Sheet

Example Snapshot Report

The FDX Method

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Additional Resources