Low testosterone in a man

Low testosterone in a man. Repeat it fasting and early before anyone starts treatment.

One page, every threshold with its number and unit. Written and reviewed by practising UK GPs. Last reviewed 29 Jul 2026.

Reference ranges change in pregnancy

This sheet puts the whole decision on one page: the thresholds that change what you do, each with its number and unit, and the sources each one was checked against.

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Inside the full sheet 🔒 Thresholds, numbers and units 🔒 Sources checked against the guideline

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Related Ocean Article: Testosterone Deficiency in Men · also Erectile Dysfunction, Gynaecomastia, Haemochromatosis. Part of the GP reference sheets, result interpretation one page per test or finding.

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