Ovulation Predictor Tests

 


During the menstrual cycle, luteinizing hormone (LH) is secreted by the pituitary gland to induce the ovaries to release an egg. An increase in LH levels occurs 24 to 48 hours before ovulation. Ovulation predictor kits measure LH levels in a woman’s urine.

Ovulation predictor kits use strips that are dipped into urine, and then read against a color code to determine the LH level. The strips cost $20 to $50 per cycle. More advanced kits include a monitor to read the test strip results electronically, and can cost several hundred dollars plus the cost of strips.

While the tests identify an LH surge, they do not give information regarding whether the ovulation process is just beginning or just ending, and they give relatively little advance notice of ovulation. Testing may need to occur daily or twice a day over the time span of several days in order to adequately detect the timing of ovulation.

 

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