lh test

Most at-home ovulation tests detect luteinizing hormone (LH). Some tests also measure estrogen metabolites such as E3G or pregnanediol‑3‑glucuronide (PdG). Pregnancy tests detect hCG.

They typically use either a digital readout (icons or words) or a visual line/color system. Visual formats include plus/minus symbols, a test line versus a control line, or changes in line color or intensity to indicate a positive.

For strip tests, dip the strip into a collected urine sample for a few seconds. For test sticks, hold the absorbent tip in the urine stream or dip it into a urine cup, following the product’s timing instructions.

Some test instructions recommend testing in the afternoon—often between about 10 a.m. and early evening—though exact timing varies by product. Check your specific kit’s directions for the recommended testing window.

Many kits offer companion app support or tracking features such as result photo upload/scan, QR-code scanning, syncing, and cycle logging to help track results and fertility windows.