LH – what do your numbers mean?
Have you had your LH level measured and are you unsure what the numbers mean? Here you will find a clear explanation of the normal range, what a too high or too low level can mean, and when it makes sense to get tested.
What is the normal range for LH?
What is the normal range for LH?
The normal range for LH (Luteinizing hormone) varies depending on age, sex, and physiological conditions. For fertile women, it is typically: follicular phase 2.4-12.6 int.units/L, ovulation peak 14.0-96 int.units/L, luteal phase 1.0-11.4 int.units/L, and during pregnancy <0.4 int.units/L. For men over 10 years, the normal range is 1.7-8.6 int.units/L, while postmenopausal women have higher levels at 7.7-59.0 int.units/L. Reference intervals may vary between laboratories depending on analytical methods. Being close to the limits can indicate hormonal imbalances or diseases, and it is important to interpret the results in conjunction with clinical symptoms.
What does a low level mean?
A low level of LH can be caused by disorders in the hypothalamus or pituitary gland, such as pituitary tumors or hypothalamic amenorrhea. Functional causes such as anorexia, severe stress, or the use of birth control pills can also reduce LH levels. Symptoms may include missed periods, infertility, or delayed puberty. Groups such as women with eating disorders or individuals with chronic illnesses are particularly vulnerable. It is recommended to seek medical attention for further investigation and treatment, which may include hormone tests and imaging diagnostics.
What does a high level mean?
A high level of LH can indicate gonadal insufficiency, as seen in conditions such as Turner's or Klinefelter's syndrome, or after menopause. In women, polycystic ovary syndrome (PCOS) can be a cause, especially if the LH/FSH ratio is elevated. Symptoms may include irregular periods, infertility, or early puberty. If you experience such symptoms, you should contact a doctor for further examination. Treatment depends on the underlying cause and may include hormone therapy or lifestyle changes.
Get your LH level tested
At Celto, you can order a blood test for LH directly online – without a referral from your doctor and without long waiting times. We have over 34 sample collection sites at public hospitals throughout Denmark, and your samples are analyzed at the same accredited laboratories used by the rest of the healthcare system. You will receive your results directly on sundhed.dk, just like all other blood tests from the public system.
How it works
When you order a blood test from Celto, you choose which markers you want to have tested – no doctor's referral needed. After your purchase, you will receive an email with a link to our booking system, where you choose a time and place. The blood test itself is taken by authorized healthcare personnel and typically only takes a few minutes.
Where you can get tested
Celto has over 34 sample collection sites at public hospitals and clinics around Denmark. You choose the location that suits you best among our partners, and there are typically available times within a few days. Find your nearest sample collection site →
How you get your answers
Your blood samples are analyzed at the same laboratories used by your own doctor and the rest of the healthcare system, with the exact same quality and the same tests. You will receive your results directly on sundhed.dk within a few business days, and Celto will also send an easy-to-understand review of your values so you know what the numbers mean.