Unfortunately, No ...
There are good, so-so and 'questionable' pregnancy strips / test kits out there.
Above are pregnancy test strips / kits (HCG) taken when beta HCG level was at about 70 miu/ml.
(What is beta HCG? It is a 'quantitative' HCG level using blood serum)
The top one, claims to be 10 miu/ml ... - and only register a very, very faint line, visible only at certain angle with light.
Second one is Wondfo - 25 miu/ml, line is visibly there. (Yay! This, I am selling!!)
Third is also 25 miu/ml test strip. Also a very faint line. Need super eyes to spot.
Note to self :- POAS is not a cheap hobby! :)