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I found this on POAS.com It wasn't a gray line or yellowish line or a ghost line. I put the drops in. Walked in the bedroom put my pants on and went to look and clearly a PINK line. It was pink in less than 3 min. Pink in 10 min. and PINK now. I have run out of tests. We have a nasty storm about to come in or I would go grab another so morning it will have to wait.
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.
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Mia Mommy to 2 girls and a boy Praying for 1 more.
__________________ TTCing since August 2011
Me (33)-LP on the short side, but no other abnormalities
DH (37)-slightly subfertile morphology and motility
Natural cycles-August 2011-July 2012
August 2012-October 2012 clomid and progesterone
November 2012-IUI
December 2012, cysts from IUI, on bcp
January 2013-February 2013, long protocol IVF
15 eggs retrieved, 11 mature, 7 fertilized with ICSI
All 7 made it to 5 day transfer, 2 were transferred
Only 1 frozen snowbaby
1st IVF