lh
Definition
- Noun (Abbreviation):
- Luteinizing Hormone: A gonadotropic hormone secreted by the anterior pituitary gland. In females, it stimulates ovulation and the development of the corpus luteum. In males, it stimulates the production of androgens (like testosterone) by the testes.
Usage
- LH is primarily used as a scientific and medical abbreviation. It is almost always written in uppercase letters.
- It is commonly used in contexts related to endocrinology, reproductive biology, fertility treatments, and medical diagnostics.
Examples
- Noun:
- The doctor ordered a blood test to check her LH levels.
- A surge in LH triggers ovulation in the menstrual cycle.
- In men, LH is sometimes called Interstitial Cell-Stimulating Hormone (ICSH).
Advanced Usage
- "LH surge": The sharp, mid-cycle increase in luteinizing hormone that causes the ovary to release an egg (ovulation). Ovulation predictor kits detect this surge.
- She is tracking her LH surge to identify her most fertile days.
- "LH/FSH ratio": A calculated value used in diagnosing conditions like Polycystic Ovary Syndrome (PCOS), comparing the levels of Luteinizing Hormone to Follicle-Stimulating Hormone.
- An elevated LH/FSH ratio can be an indicator of PCOS.
Variants and Related Words
- Luteinizing Hormone (n): The full, unabbreviated name for LH.
- Gonadotropin (n): The class of hormones to which LH belongs, which act on the gonads (ovaries or testes). Follicle-Stimulating Hormone (FSH) is another major gonadotropin.
- ICSH (Interstitial Cell-Stimulating Hormone) (n): An alternative name for LH specifically in males.
Synonyms
- Luteinizing Hormone: The full term is a direct synonym.
- Gonadotropic hormone: This is a broader category synonym, describing its type and function.
Related Phrases
- Trigger shot: In fertility treatments, an injection of human Chorionic Gonadotropin (hCG) or sometimes recombinant LH, which mimics the natural LH surge to induce final egg maturation and ovulation.
- The patient will receive a trigger shot of hCG to complete the IVF cycle.
Noun
-
a gonadotropic hormone that is secreted by the anterior pituitary; stimulates ovulation in female mammals and stimulates androgen release in male mammals
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