Low Testosterone in Women: Symptoms, Diagnosis, and Treatment Options

# Low Testosterone in Women: Symptoms, Diagnosis, and Treatment Options

The testosterone conversation is almost always framed around men. But women produce testosterone too — produced by the ovaries and adrenal glands — and when those levels are insufficient, the effects on energy, libido, body composition, and mood are very real.

What's less appreciated is how common low testosterone is in women, and how underdiagnosed it remains.

Why Women Need Testosterone

Testosterone in women functions across multiple systems:

Sexual function: Testosterone is the primary driver of libido and sexual desire in women (more so than estrogen). Low T is strongly associated with hypoactive sexual desire disorder (HSDD).

Energy and vitality: Women with low testosterone commonly report persistent fatigue that doesn't improve with rest — distinct from the hormonal fatigue of low estrogen.

Bone density: Testosterone contributes to bone mineral density in women. Low levels are associated with accelerated bone loss, especially post-menopause.

Muscle mass and body composition: Testosterone stimulates muscle protein synthesis. Women with low testosterone find it harder to maintain or build muscle and more easily accumulate fat — particularly visceral (abdominal) fat.

Mood and cognition: Testosterone has neurological effects. Low levels are associated with irritability, poor concentration, brain fog, and depressed mood.

Normal Testosterone Levels in Women

Female testosterone levels are naturally much lower than male levels — roughly 10-20x lower by most measures.

Normal ranges (may vary slightly by lab):

| Measurement | Normal Female Range | |---|---| | Total testosterone | 15-70 ng/dL | | Free testosterone | 0.3-1.9 ng/dL | | DHEA-S (precursor) | 45-320 µg/dL |

These are general reference ranges; some labs use different ranges, and "normal" doesn't always equal optimal. A woman at the bottom of the range may experience symptoms while technically testing "normal."

Critical note: Standard male testosterone reference ranges are wildly inappropriate for women. A woman testing at 20 ng/dL is in the normal female range — not "low" by male standards, but potentially at the low end of her optimal range.

When Does Testosterone Drop in Women?

Natural decline with age: Testosterone in women peaks in the 20s and declines gradually. By the 40s, levels can be half of peak values.

Surgical menopause: Oophorectomy (removal of ovaries) causes an abrupt drop in both estrogen and testosterone — often more dramatic than natural menopause.

Natural menopause: The ovaries reduce testosterone production. By the late post-menopausal period, levels may be 50-75% lower than premenopausal.

Oral estrogen use (including birth control): Oral estrogens increase sex hormone-binding globulin (SHBG), which binds to testosterone and reduces free (biologically active) testosterone. Women on oral contraceptives or oral HRT may have adequate total testosterone but very low free testosterone.

Hypopituitarism: Pituitary disorders affecting gonadotropin production reduce ovarian testosterone output.

Adrenal insufficiency: The adrenals produce DHEA/DHEA-S (testosterone precursors). Adrenal insufficiency reduces androgens broadly.

Symptoms of Low Testosterone in Women

The classic presentation:

• Decreased libido: The most consistent symptom. Low testosterone is the primary hormonal driver of reduced sexual desire in women
• Fatigue: Persistent, not explained by sleep quality or thyroid function
• Reduced muscle mass / difficulty building strength: Workouts feel ineffective despite consistent effort
• Increased body fat, particularly abdominal: Testosterone supports fat distribution; low levels shift toward central adiposity
• Mood changes: Irritability, low motivation, depressed mood, difficulty concentrating
• Reduced bone density (often asymptomatic until fracture)
• Reduced clitoral sensitivity and decreased genital arousal response
• Hair thinning: Can be paradoxical — both very high and very low androgens can cause hair loss in women

Diagnosis

Getting a proper workup for low testosterone in women requires finding a physician who takes it seriously — many don't, and the absence of FDA-approved testosterone products for women (in the US) complicates the conversation.

A proper hormone panel for suspected low T in women includes: - Total testosterone (sensitive assay — standard immunoassays are inaccurate at low female levels) - Free testosterone (by equilibrium dialysis, the gold standard) - SHBG (high SHBG reduces free testosterone even if total is adequate) - DHEA-S (androgen precursor, adrenal production) - Estradiol (estrogen status affects interpretation) - FSH/LH (helps identify menopausal status and pituitary function)

Important: Request liquid chromatography-mass spectrometry (LC-MS/MS) methodology for testosterone if possible. Standard immunoassay tests are designed for male testosterone levels and have poor accuracy at the low concentrations found in women.

Treatment Options

### Testosterone Therapy (Off-Label for Women)

There are no FDA-approved testosterone products specifically for women in the US (though several exist in other countries, including testosterone patches in the UK/Australia). Women who receive testosterone therapy get it off-label, typically through:

Compounded testosterone cream or gel (most common): Customized to female-appropriate doses (typically 1-10mg/day, vs. 50-100mg/day for men). Applied topically. Allows precise dosing.

Testosterone pellets: Subcutaneous implants lasting 3-6 months. Less precision for dose adjustments but convenient for long-term use.

Standard male formulations at lower doses: Some physicians use male topical products at a fraction of the normal dose, though this introduces practical challenges with dosing accuracy.

Target ranges for women on testosterone therapy: free testosterone in the mid-to-upper female range, and total testosterone generally below 100 ng/dL (to maintain female physiology).

### What to Expect on Testosterone Therapy

• Libido: Often first and most noticeable improvement (weeks 3-8)
• Energy: Gradual improvement over 4-12 weeks
• Body composition: Muscle maintenance improves; fat distribution may shift — effects visible over months, not weeks
• Mood: Variable; some women see significant improvement, others see modest benefit

### Monitoring

Women on testosterone therapy need regular monitoring: - Testosterone levels: Every 3-6 months initially to dial in the dose - Hematocrit: Testosterone can increase red blood cell production, though less so at female doses - Lipids: Androgens can modestly affect cholesterol profile - Signs of virilization: Acne, increased body/facial hair, voice changes (these indicate dose is too high; manageable with dose reduction)

### DHEA Supplementation

DHEA is an over-the-counter supplement (in the US) that converts to testosterone and estrogen in peripheral tissues. Some women with low DHEA-S see improvement in energy and libido with 25-50mg DHEA daily. Effects are variable and less predictable than direct testosterone therapy, but it's a low-risk first step.

A physician can check DHEA-S levels and advise appropriate supplementation.

The Broader Picture: Hormone Balance

In peri- and post-menopausal women, testosterone therapy is most often combined with estrogen/progesterone therapy as part of comprehensive hormone replacement. Testosterone alone without addressing low estrogen often produces suboptimal results.

A comprehensive evaluation — not just checking a single number — is the right approach.

At Marrow, our physicians are comfortable evaluating and treating both male and female hormone imbalances. [Start your consultation →](/start)