Timebot - I am pasting the below from my HMOs web page on LH & FSH. Hope they paste in ok:
LH levels depend on a person’s age and stage of sexual development, and, in a woman, on the phase of her menstrual cycle. The urine test to determine whether a woman is ovulating detects only the presence (positive result) or absence (negative result) of LH.
Normal
Normal values vary widely among labs and methods used. Ask your doctor for normal values of your luteinizing hormone test.
Luteinizing hormone in blood
Men: 1–15 IU/L
Male children at puberty: 4–12 IU/L
Many conditions can change LH levels. Your doctor will discuss any significant abnormal results with you in relation to your symptoms and past health.
High values
High luteinizing hormone values in a man may mean:
Testicles are absent or have been removed.
Testicles are not functioning because of surgery or damage from mumps, X-ray exposure, chemotherapy, cancer, or injury.
Klinefelter syndrome.
Low values
Low luteinizing hormone values in a man or woman may mean:
Anorexia nervosa.
Pituitary gland failure.
Damage to a part of the brain called the hypothalamus.
Stress.
Low body weight.
Continue to Luteinizing Hormone–What Affects the Test
A follicle-stimulating hormone test measures the amount of follicle-stimulating hormone (FSH) in a blood sample. The test results depend on your age and stage of sexual development.
Normal
Normal values vary widely among labs and methods used.
Follicle-stimulating hormone (FSH)
Men: 1–8 IU/L
Children before puberty: 0.5–4 IU/L
Many conditions can change FSH levels. Your doctor will discuss any significant abnormal results with you in relation to your symptoms and past health.
High values
High FSH values in a man may mean:
Klinefelter syndrome.
Testicles are absent or not functioning properly.
Testicles have been damaged by a disease, such as alcohol dependence, or by treatments, such as X-rays or chemotherapy.
High values in children may mean that puberty is about to start.
Low values
Low FSH values may mean:
A woman is not producing eggs (prevents ovulation) or a man is not producing sperm.
An area of the brain (the hypothalamus or pituitary gland) is not functioning properly.
A tumor is present that interferes with the brain’s ability to control FSH production.
Stress.
Starvation or being very underweight.