Sex Hormones

Testosterone, Total
Measures the overall amount of testosterone in the blood. Important for muscle mass, energy, mood, and sexual health.

Sex Hormone Binding Globulin (SHBG)
A protein that binds testosterone and estradiol, controlling how much is available for use by the body.

Testosterone, Bioavailable
The fraction of testosterone that is not bound to SHBG and is available to act on tissues.

DHEA Sulfate (DHEA-S)
A precursor hormone produced by the adrenal glands. Supports testosterone and estrogen production and declines with age.

Testosterone, Free
The active form of testosterone unbound to proteins, directly influencing muscle, libido, and metabolism.

Estradiol
A key estrogen hormone in both men and women. Plays a role in bone, brain, and cardiovascular health.

Follicle Stimulating Hormone (FSH)
Regulates sperm production in men and egg development in women. Helps evaluate fertility and gonadal function.

Prostate Specific Antigen (PSA), Free
The unbound form of PSA in the blood. Used alongside total PSA to assess prostate health and cancer risk.

Progesterone
A hormone essential for reproductive health, menstrual regulation, and maintaining pregnancy in women.

Prostate Specific Antigen (PSA), Total
Total PSA in the blood. Elevated levels may indicate prostate enlargement, inflammation, or cancer.

Luteinizing Hormone (LH)
Stimulates testosterone production in men and ovulation in women. Important for reproductive health.

Prolactin
A hormone that regulates breast development and milk production. Elevated levels can signal pituitary or hormonal imbalance.

Free Androgen Index (FAI)
A calculated ratio of testosterone to SHBG. Estimates the amount of active testosterone available in circulation.

Testosterone / Estradiol (T:E2)
Assesses the balance between testosterone and estradiol. Imbalances can affect energy, fertility, and cardiovascular health.