Thank you Briana

I'm just trying to be patient.
I have really not gotten evaps on the $ tests or walmart cheapies before this. I read an article once that explained how urine tests are made ( any type, drug etc)It said that the control lines always respond to any moisture but whatever is being tested for- the test line will ONLY change when exposed to the "metabolite" for that substance.
Obviously hcg for a hpt. But it was a superlong article that explained rapid assay tests are to be read within manuf time frame, but still the test line will only react (meaning color change, not just an evap of blank space etc) IF the proper metabolite contacts the test area.
I am a medical background person, so this makes sense to me.
Therefore a line with color should mean there is "some" of the substance detected scientifically. But I have seen ppl test with crazy things and make tests change.
But again certain substances at their chemical breakdown level do cause reactions in hospital test ( like some medicines causing tests to come up positive for blood when there is no blood in the specimen blah blah)
Lol I get in trouble overthinking the science of it all.
But I know when it comes down to it, even if my semi bfp looking evaps are truly from hcg...if it doesn't go up it's not sustainable.
That I can deal with.
I also know that no matter the product- a manuf will always put a detection level on a test that is reliable nearly 100% of the time.
So even when they tell us a test detects 25miu, it has to detect less than that to be marketable- meaning they know in trials it detected 15-20, but for CYA they will never market the absolute lowest as guaranteed, so 25 would allow them a buffer zone.(insert Geek Smiley lol)
I just have never been one of those ppl who can lie to themself, so to SEE a colored line at all, I can't stop thinking of that article and saying , well...it could be.