Evap Line on a pregnacy test?

http://www.peeonastick.com/

Surprisingly, cheap tests purchased at dollar stores or on the Internet are often more sensitive and reliable than expensive store brands. HPT's are like soda: very cheap to make, and marked up quite a bit for retail.

What's an evaporation line? Evaporation ("evap") lines 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.

If it is gray, it is an evaporation line. On the paper inside the test, there are antibodies lined up - this is what changes color to pink (or blue, depending on the test) when the HCG hormone hits it. No matter what test it is, you can still see the line faintly - but if it didn't change color with the control lines, you're not pregnant.

So, in your case, I think that your HCG levels weren't high enough for the first test, but with the second test, they were high enough to trigger the line of antibodies to change color. I think you are pregnant :)

sounds like a positive test on the second one. It is still early, retest in 3-5 days

Sounds like a positive. The first one sounds like an evaporation line. Try "First Response"

If its that important to you, put more money into it and get a real test, I wouldn't trust those things......