Intermediate
Technical
IVT
luteinizing hormone surge
The rapid rise in luteinizing hormone that triggers ovulation in natural cycles.
Full Definition
A dramatic increase in luteinizing hormone levels that occurs approximately 24-36 hours before ovulation in natural menstrual cycles. The LH surge is triggered by rising estrogen levels and is essential for final oocyte maturation and follicle rupture. In assisted reproductive technology, preventing or timing the LH surge is crucial for successful egg retrieval, often achieved through GnRH antagonists or agonists.
In Context
- "Ovulation predictor kits detect the luteinizing hormone surge." — Patient education material
- "The protocol aims to prevent premature luteinizing hormone surge." — Treatment plan
Also known as
LH surge
LH peak
Don't confuse with
LH suppression
ovulation