Always read the manufacturer’s instructions for any medication you are taking before conducting the test
Fertility drugs containing hCG can give misleading results (these fertility drugs are usually given by injection, and testing too soon after administration may give a false ‘Pregnant’ result).
Other fertility therapies (such as clomiphene citrate), painkillers and hormonal contraceptives (e.g. contraceptive pills) should not affect the pregnancy test result
If you have recently stopped taking hormonal contraception or are using fertility therapies like clomiphene citrate, your periods may be irregular, leading you to test too soon
If you have recently been pregnant (even if not carried to full term) you may get a false ‘Pregnant’ result
Ectopic pregnancy, ovarian cysts, menopause and some very rare medical conditions can give misleading results
If you have a ‘Pregnant’ result it is possible that you later find that you are not pregnant due to natural loss of the pregnancy which can occur in the early stages
If you do get unexpected results you should discuss them with your doctor
This information is relevant only to the pregnancy test results. See page 3 of the full instructions (download here) to check what medication or medical conditions affect the fertility test results.