lh strips

LH ovulation strips detect luteinizing hormone (LH) in urine to identify the LH surge that typically precedes ovulation.

Dip the strip briefly in urine (about 3–5 seconds) and read the result according to the product instructions. Most strips show results in about 3–5 minutes; some digital monitors list a reading time up to 20 minutes.

A positive result is usually when the test line is as dark as or darker than the control line. Digital tests may instead display a clear indicator (for example, a smiley face or other icon) to denote peak fertility.

Some product listings report a sensitivity around 25 mIU/mL; a few digital tests claim they can detect lower LH surges below that level. Because reported thresholds vary by manufacturer, check the specific product specifications for the exact sensitivity.

Pack sizes vary by brand; common listings range from about 10 up to 100 strips. Some starter or kit options specifically include 10 or 20 testing wands.

Some kits and devices also measure E3G (estrone-3-glucuronide) and PdG (pregnanediol glucuronide) alongside LH to give broader hormone insight and a fuller view of the fertile window.

Common formats are color indicator lines on paper strips and digital readouts or icons on electronic tests. Digital readers often show an unambiguous icon (for example, a smiley face) or a simple text message to indicate peak fertility.