What is luteinising hormone (LH)?
LH is a hormone released by the brain that supports reproductive hormone production and healthy hormonal communication. It is measured in IU/L in Australia and plays a key role in regulating testosterone signalling in men and menstrual cycle rhythm in women.
Why does it matter for long-term health and wellbeing?
LH offers a window into how effectively the body maintains hormonal balance. Because hormonal signalling influences energy, recovery, vitality, and metabolic efficiency, understanding your LH level helps you make informed lifestyle choices that support long-term wellbeing.
What’s an optimal level of LH?
Laboratory reference ranges vary between men and women.
- Men: typically up to around 10 IU/L
- Women (menstruating): approximately 2–7 IU/L
Vively’s optimal ranges sit within these laboratory values to reflect steady, well-regulated hormonal communication rather than minimum thresholds.
What influences LH levels?
Nutrition, exercise patterns, sleep quality, stress levels, and overall lifestyle can all influence how the brain signals reproductive hormones. Natural life stages, cyclical changes in women, and certain supplements can also affect LH.
What does it mean if LH is outside the optimal range?
Levels slightly above or below the optimal window may indicate that hormonal signalling is responding to lifestyle demands or stressors. These shifts can offer useful feedback on recovery, overall load, and how well your current habits support hormonal steadiness.
How can I support healthy LH levels?
Consistent sleep, balanced nutrition, resistance training, stress-management strategies, and steady daily routines all help support hormonal regulation. Regular testing allows you to see how these behaviours influence your LH trend over time.
FAQs
What are LH test strips used for?
LH test strips are commonly used at home to detect surges in luteinising hormone, often to help track ovulation timing. While useful for short-term cycle insights, they do not replace an LH hormone test done through blood testing, which provides a clearer view of baseline hormonal balance.
Why are FSH and LH tested together?
A combined FSH and LH blood test helps show how effectively the brain is signalling the reproductive system. Looking at both hormones together provides better context for understanding hormonal communication, balance, and how the system responds to lifestyle or physiological changes.
When should you consider an LH hormone test?
An LH hormone test may be useful if you want deeper insight into reproductive hormone regulation, cycle regularity, or testosterone signalling. It is also helpful for tracking trends over time to see how sleep, stress, training, and nutrition influence hormonal steadiness.
This information is provided for general health and wellness purposes only and does not replace medical advice.
References
- Better Health Channel. Hormonal (endocrine) system. Victorian State Government.
- National Health and Medical Research Council & Australian Government Department of Health and Ageing. Nutrient Reference Values for Australia and New Zealand including Recommended Dietary Intakes. Canberra: NHMRC; 2006 (with updates).
- Food Standards Australia New Zealand. “Nutrient Reference Values (NRVs) – overview.”
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