Early Detection Pregnancy Test works by detecting levels of the pregnancy hormone human Chorionic Gonadotropin (hCG) as low as 25mlU/mL.
If you test negative (not pregnant) before your missed period, but believe you may be pregnant, you should re-test in a few days time or the day after your missed period. If you test positive (pregnant) but think you are not pregnant, you should consult your doctor.