Luteinizing hormone in blood
| Menstruating women: | Follicular | 1–18 international units per liter (IU/L) | | Midcycle peak | 8.7–80 IU/L | | Luteal | 0.5–18 IU/L | | Women past menopause: | All | 12–55 IU/L | | Men: | All | 1–9.0 IU/L | | Children: | Before puberty | 0–1.0 IU/L | | Male at puberty | 0.4–7 IU/L | | Female at puberty | 0.4–12 IU/L |
Luteinizing hormone in urine
| Menstruating women (non-midcycle): | 0–5 IU/24 hours | | Women past menopause: | More than 5 IU/24 hours | | Men: | 0.2–5.0 IU/24 hours | | Children (before puberty): | 0–0.2 IU/24 hours |
The purpose of many home urine tests is to predict ovulation. Such tests are used to see if LH is present (it is known as qualitative testing) and to define its amount and level. When LH is available in urine, the results are positive. When LH is not available, the results are negative. There are a lot of conditions that influence LH levels. You may consult a doctor if you have any concerns about results, symptoms and medical history.
The amount of LH is high under the following conditions:
1) the absence or removal of ovaries,
2) improper functioning of ovaries due to menopause, polycystic ovary syndrome (PCOS), or harm made by chemotherapy.
3) the absence or removal of testicles,
4) improper functioning of testicles due to surgery or harm made by mumps, X-ray exposure, chemotherapy, cancer, or injury,
5) klinefelter syndrome,
6) early puberty occurred in young girls.
The amount of LH is low under the following conditions:
1) Anorexia nervosa,
2) зroblems connected with pituitary gland,
3) hypothalamus (it is harm made to a part of the brain),
4) stress,
5) low body weight.
There are some causes that prevent having a test and influence the results:
1) Some hormone medicines, among them there are those that have estrogen or progesterone in their content (such as birth control pills).
2) Such medicines as clomiphene, spironolactone, naloxone, and medications taken to prevent seizures (anticonvulsants), digoxin, and phenothiazine.
3) Obesity.
4) Hyperthyroidism.
5) Liver illness.
6) Diagnostic procedures, such as a thyroid scan or bone scan, that are held with a radioactive substance (tracer) within 7 days before LH testing.
7) 24-hour urine LH levels that are sometimes influences by the total quantity of collected urine.
Consult a doctor if you consume medications with testosterone, estrogen, or progesterone (such as birth control pills) in their content. The doctor may recommend you to give up taking these medications for some days before having a luteinizing hormone (LH) test. A woman can easily identify the most fertile days with home ovulation kits that can be bought without a prescription. The purpose of these tests is to measure the availability of LH in urine using a dipstick or test strip. A woman can also buy without a prescription computerized home ovulation tests. Their purpose is to measure the quantity of LH in urine and then the women can see the results displayed on a small computerized monitor. Among other tests for ovulation there are the measurement of basal body temperature, the identification of the progesterone level after ovulation in the menstrual cycle and the statement of changes in cervical mucus.
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