Which tests measure Luteinising Hormone?

Luteinising Hormone is measured in 1 test on BiomarkersLabs.com, including Female Quick Check Basic Panel.

Biomarker Reference · LH

What does the Luteinising Hormone test measure?

Q: What is the reference range for Luteinising Hormone?

The standard reference range for Luteinising Hormone is Cycle-phase dependent — follicular phase approximately 2–10 mIU/L, with a pronounced mid-cycle surge; postmenopausal elevated. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Luteinising Hormone (LH) is a clinical biomarker used in female-hormones assessment. Luteinising hormone is the second gonadotrophin, secreted in pulses that vary in frequency and amplitude across the cycle. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: Cycle-phase dependent — follicular phase approximately 2–10 mIU/L, with a pronounced mid-cycle surge; postmenopausal elevated
Units: mIU/mL, IU/L
Measured In: 1 test
Category: Female Hormones

Functional medicine optimalNot applicable — interpreted against cycle-phase-specific intervals rather than an independent target

What is Luteinising Hormone?

Luteinising hormone is the second gonadotrophin, secreted in pulses that vary in frequency and amplitude across the cycle. It stimulates ovarian theca cell androgen production and triggers ovulation through a mid-cycle surge, then supports the corpus luteum. Because secretion is pulsatile, a single measurement samples one point in an oscillating signal.

Why is Luteinising Hormone measured?

LH is interpreted alongside FSH rather than alone. An elevated LH to FSH ratio has historically been associated with polycystic ovary syndrome, though it is neither sensitive nor specific and is not a diagnostic criterion under the Rotterdam consensus. Both gonadotrophins elevated indicates primary ovarian failure, while both low or inappropriately normal in the presence of low oestradiol indicates a hypothalamic or pituitary cause. Pulsatile secretion limits the interpretive weight of any single value.

Reference ranges

Standard reference: Cycle-phase dependent — follicular phase approximately 2–10 mIU/L, with a pronounced mid-cycle surge; postmenopausal elevated
Functional medicine optimal: Not applicable — interpreted against cycle-phase-specific intervals rather than an independent target
Units: mIU/mL, IU/L

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Luteinising Hormone

1 test on BiomarkersLabs.com include this biomarker.

BML-HRF-007Comprehensive

Female Quick Check Basic Panel

Luteinising Hormone reference range in this test: Cycle-phase dependent — follicular phase approximately 2–10 mIU/L, with a pronounced mid-cycle surge; postmenopausal elevated

Related clinical conditions

Related Biomarkers

Frequently measured alongside

Follicle Stimulating HormoneFSH1 test Oestradiol (E2)E21 test ProlactinPRL1 test Thyroid Stimulating HormoneTSH1 test Testosterone, TotalTotal T1 test

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