Clearblue Advanced Digital ovulation tests detect two hormones: luteinizing hormone (LH) and estrogen (E3G).
They typically identify four or more fertile days in a cycle, reporting both High and Peak fertility days.
Product materials state the digital ovulation tests are over 99% accurate at detecting the luteinizing hormone (LH) surge.
A blank circle indicates low fertility, a flashing smiley face indicates high fertility, and a steady (static) smiley face indicates peak fertility.
Result times listed for Clearblue ovulation tests generally range from about 3 minutes to 5 minutes, depending on the specific pack.
You can use the test by holding the test stick in your urine stream or by dipping the absorbent tip into a urine sample collected in a clean, dry container. Follow the pack instructions for exact timing and how to read the result.
The refill pack shows an LH surge as a visible line (Positive); a flat line indicates no LH surge (Negative).
The related Clearblue Rapid Detection Pregnancy Test lists a sensitivity of 25 mIU/ml for hCG.
