Has anyone had an evap line from a pregnancy test, turn out to be that your actually pregnant?

Question

I had taken a pregnancy test and it was neg, threw it in my purse. When I went to throw it away a few hours later it was faintly pink in the pos area. Thought maybe evap line. Took two more yesterday morning and same exact thing happened. Neg and then a few hours later a light pink line showed up. I was wondering if it sounds like evap lines or maybe it took longer to devleop since my period isn't due for 5 more days. Sorry for all the questions, any advice would be greatly appreciated, thanks

Answer 1

Hi there here are some info on evap lines i get them all the time. After the 10 min time rame they are no longer active,.
result with the test's antibody strip just looks slightly different than the space around it. There is a line of antibodies (usually made from mouse cells) in the Control and Test section. The Control line binds with any liquid and turns pink (or blue, in tests using blue dye.) The Test/Result line turns pink only if pregnancy hormone is detected. If not, the moisture passes over this strip and does not turn pink. It may, however, become more visible when the light hits the moisture on the strip-- it may appear gray, colorless, like a "dent" in the test, or like a "ghost line." It may appear at any time-- as soon as the urine hits it, after a few minutes as the test absorbs the moisture, or after the 10-minute time limit. It may appear when the test is drying, or after it has dried. It may disappear as the test is drying, or after the test has dried, or not disappear at all.

The simple fact is that there is always "something there" that is slightly visible-- it's simply the antibodies on the test that would turn pink in the presence of hCG. When the test becomes wet, or as it dries, or after it dries, the antibody strip may become more visible. Therefore, all tests may have them. It is not a defect; it's just how tests are made.

A real positive is identified by its color (pink or blue, whatever the color of the test's dye is) and its appearance within 10 minutes of urinating on the stick. A line that appears after 10 minutes, regardless of color, must be considered an evap line and is caused by the test's chemicals changing. HPT's are rapid assay diagnostics, which means any results appearing after the "rapid" time limit of 10 minutes are invalid.

Answer 2

Almost all of my negative tests had evap lines. Both times when I got my first posiitve result, the faint positive line showed up under a minute. You really should throw those tests away, and not even look at then after the elapsed time. I know most women do what you have done though, look at them later.

Answer 3

I have not had that happen to me but I always go back and look after hours because I have heard that happen.
They get a negative, throw it away... Feel that it might have been wrong... Go back in the trash to get it and it was a faint pink line... she has a baby now!!

Answer 4

After the allotted time frame, the test is no longer accurate. I would wait till the day your suppose to get your period and then test.

Answer 5

You aren't supposed to read the result a few hours later. It's only accurate within the first 10 minute time frame. It says that on the instructions to disreguard any results after so long.

Answer 6

You will have to wait a few more days and take another test