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Medical disclaimer: This site provides comparison information only and does not constitute medical advice. Consult your GP for medical guidance. Clinical content reviewed by Nathanial Smith, Registered Healthcare Professional (HCPC reg. PA43353).

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Tests for low libido

Reduced sex drive or changes in sexual function

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Why test for low libido?

Low libido affects both men and women and frequently has a hormonal component. Testosterone deficiency, thyroid disorders, high prolactin, and chronic fatigue from anaemia or vitamin deficiency can all reduce sexual desire. Blood testing helps identify treatable causes so that appropriate support โ€” medical or lifestyle โ€” can be targeted effectively.

Recommended tests

Male hormone profile

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Low testosterone is the most common hormonal cause of reduced libido in men

Total testosterone
Free testosterone
SHBG
LH
FSH

Female hormone profile

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Oestrogen, testosterone, and progesterone imbalances all affect desire and arousal

Oestradiol
Testosterone
Progesterone
SHBG

Thyroid function

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Both overactive and underactive thyroid disrupt libido and energy

TSH
Free T4
Free T3

Prolactin

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Elevated prolactin suppresses sex hormones and reduces desire

Prolactin

When to see your GP

If low libido is accompanied by erectile dysfunction, absent periods, or discharge from the nipples, seek medical advice promptly.

Compare all low libido testsView all symptoms

Why test for low libido?

Symptom-led matching

See the tests commonly used to investigate this symptom

UKAS accredited labs

Every listed provider uses UKAS-accredited UK laboratories

Clear turnaround

Typical result times shown alongside price and biomarker coverage

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