A positive result may be seen if you had a miscarriage or have given birth within the past 8 weeks (since hCG may still be in your system). Certain drugs which contain hCG or that are used in combination with hCG (such as Pregnyl, Profasi, Pergonal, APL) and some rare medical conditions such as trophoblastic disease, Islet cell tumors, and some carcinomas can also give false positive results.
Related blog articles:
Pregmate Pregnancy Tests. How and when to do the test? 
Conception explained. Fertilization and Implantation.
Pregmate App - Ovulation Tracker, Fertility and Period Calculator
What factors can give false positive results?
What if the testing line is very light in color, am I pregnant?
What are pregnancy test evaporation lines?
Fertility drugs and pregnancy testing
When to collect urine for the pregnancy test?
Reading pregnancy test results
20 comments
Took a pregmate pregnancy test, got a very faint but obvious positive. Pink dye, within the 3-5 minute timeframe, followed instructions. Took another pregmate test and a FRER and they were both negative.
I’ve had two false positives so far from these tests. Horrible, not to be trusted
10 strips false positives/ 20. What the heck?! I’ve been trying and to get all false positives from your brand is crazy. Clear blue was clear negatives