The LH test measures the amount of luteinizing hormone in your blood.
LH is made by the pituitary gland and plays a key role in reproduction.
In Women:
Triggers ovulation (release of a mature egg from the ovary).
Stimulates the ovaries to produce estrogen and progesterone.
In Men:
Stimulates the testes to produce testosterone.
To investigate irregular or absent periods.
Evaluate infertility.
Detect menopause or premature ovarian failure.
Monitor ovulation timing for pregnancy planning.
To find the cause of low testosterone or infertility.
Check for testicular failure.
Investigate early (precocious) or delayed puberty.
(Ranges vary by age, gender, and menstrual cycle phase)
| Group | Normal Range |
|---|---|
| Women (follicular phase) | 2.4 – 12.6 mIU/mL |
| Women (mid-cycle peak) | 14 – 95 mIU/mL |
| Women (luteal phase) | 1 – 11.4 mIU/mL |
| Postmenopausal women | 7.7 – 58.5 mIU/mL |
| Men | 1.7 – 8.6 mIU/mL |
| Children | Varies with puberty stage |
| High LH | Low LH |
|---|---|
| Menopause | Pituitary gland problems |
| Ovarian failure | Hypothalamic dysfunction |
| Polycystic Ovary Syndrome (PCOS) | Severe stress or malnutrition |
| Testicular failure | Excess estrogen or testosterone |
| Precocious puberty | Delayed puberty |
No fasting required.
For women, test is often done on day 3 of the menstrual cycle for fertility evaluation.
Avoid hormonal medicines unless advised by your doctor.
Same Day*
