Al three have given me a very faint positive. I took an equate pee test yesterday, and after two minutes it appeared negative. Evaporation Lines: Always read your test results within the test reaction time (usually 5 minutes) as evaporation lines can develop as the urine dries on the test area. Filtered: Evaporation line. To start-with, no evaporation line will be coloured (pink or blue etc. An evaporation line, also commonly known as an "evap line," is a term that describes any test line that appears after the time limit is up on a pregnancy test. If it was negative in the first ten minutes, then I would say it's negative. I didn't look at it again until over 10 minutes (the max time) later. zgj-- Sounds like an evap line. Only the HCG can combine with the pregnancy-assay molecules and bring about a colour-change. A lot of people told me that the line can only turn blue from hcg and if it were an evap line it would be thinner and more gray. Only the HCG can combine with the pregnancy-assay molecules and bring about a colour-change. It was the + or - one.… So this is my irritating dilemma. The question here is, what are the chances of an evaporation line. Evaporation lines appear to show up (or not show up) as a result of the composition of the particular urine specimen – and they may appear on any test regardless of brand. An evaporation line develops when the urine on the test area begins to dry, leaving a faint, colorless line. Post photos of your pregnancy tests and ovulation tests (OPKs) for the community to vote on. So if the line is coloured – no matter how faint the line is – then HCG made the line change colour – nothing else! My test that I used water on, actually now has a big blue like but the top of the line kinda curves in. depending on the test you used). The evap lines are usually really thin, and can be bright blue. So I just left the bathroom ( with the test still on the counter, and went on about the day, no biggie, figured it was a bit to early anyways ) I went back into the bathroom a few hours later, not to even look at the test, but then seen a VERY dark ( as fark as the control line ) line but its not as thick as the control line, its thin … Equate pregnancy test evap lines? I mean a line is a line right? I would retest in a couple of days. Upload your photos, zoom in and use our photo tweaking tools! So one would think pregnant right? My period may be 6 days late if it was 35 days long this month. To start-with, no evaporation line will be coloured (pink or blue etc. I have taken 3 of the equate blue dye ( l l ) not ( + - ) test. It showed up after the allotted time period. (invert, greyscale, brightness, contrast, saturation and hue). depending on the test you used). The evaporation line is a line that may show up on the test after an extended amount of time. Wondering if your test is positive or negative? Evaporation lines are caused by evaporation of the urine in the result window of a pregnancy test. I have read a ton of people saying that evap lines are faint, thin, and mostly gray in color. So if the line is coloured – no matter how faint the line is – then HCG made the line change colour – nothing else! The control line was good and solid, before the 10 minute window was up, a very very faint line appeared in the results window. These are lines that shows in the result window of the test. My cycles are kind of irregular but tend to be about 35 days long. Are evap lines thick or thin? I have unfortunately experienced more than my fair share of evaporation lines in my ttc journey, some I could spot, others were more tricky. Can an evaporation line be thick and blue? However the line did show up within a minute or so of taking the test. The test line is light, light blue and very thin. Sometimes the evaporation line can mimic a positive result by causing a faint line to appear. This evaporation line begins to show up once the urine has started to evaporate and reacts with the test strip. Just wondering I took the one with the blue dye but my line was pretty thick it's just hard too see. Not thick at all.