The Zestica Pregnancy Test is a reliable, easy to use, high quality midstream pregnancy test. It detects hCG (human chorionic gonadotropin) in urine. This is the hormone that is produced in pregnancy.
The Zestica Pregnancy Test is sensitive enough to pick up a pregnancy before the first day of the missed period.
If testing early (i.e. before the date of the expected period)" you should always re-test at the time of your missed period.
Laboratory tests show over 99% accuracy. This does depend on 2 important factors:

How fast is the Zestica Pregnancy Test?A strong positive can show up in as little as one minute but for a negative result you should wait for up to 5 minutes to confirm the result is negative. This is because the urine needs time to move across a wick.
If, at the early stages of pregnancy, there is little hCG present it will take longer for a sufficient amount to cross the test line and produce a coloured result.