Evaporation lines only appear on tests that show negative results. A positive test would change color in the same spot, blotting out the evaporation line. If a person sees an evaporation line, it means that the test is negative, or it was taken too early in the pregnancy to show a positive result. 31 июл. 2018 г. medicalnewstoday.comИзображение:medicalnewstoday.comEvaporation lines are more likely to show up after 10 minutes and do not signify a positive test. Look for color on the test line. A faint positive result will show up as a faint blue or pink line. Evaporation lines are grey, white or colorless but still visible. Tilt the test to see if there’s an indentation. Evaporation lines are colorless streaks, not faint lines. They typically appear if a person waits for longer than the suggested time to read the test result. An evaporation line can also appear if the test gets wet.
Do evaporation lines appear on every test?
Evaporation lines are common on pregnancy tests, but they don’t appear every time. It depends on the chemical makeup of each woman’s urine. One of the best ways to avoid any confusion when using a home pregnancy test is to check your results within the reaction time.
How long do evaporation lines stay on the test?
This usually ranges between a couple of minutes up until 10 minutes later. If you see a positive result beyond this time frame, you may be left second-guessing the results. However, the false-positive reading, in this case, is due to something called an evaporation line.
Do evaporation lines ever have color?
Evaporation lines on pregnancy tests are generally colorless, but not always. There are some evaporation lines that do have color—either a light blue or light pink. The color, however, is very faint and not as dark as the color of the control line. The evaporation line can also sometimes appear greyish.
What are evaporation lines on a blood test?
Evaporation lines are colorless streaks, not faint lines. They typically appear if a person waits for longer than the suggested time to read the test result.
How long do evaporation lines appear on a pregnancy test?
Evaporation lines are common on pregnancy tests, but they don’t appear every time. Some pregnancy tests have instructions to check results after two minutes. Others have instructions to check results after five minutes. The risk of a false positive is higher when you read your results after the reaction time.
What is the difference between indent and evaporation on a pregnancy test?
Here are the key differences between an evaporation and indent line on a home pregnancy test: Usually colorless (gray) line, but can pick up dye from the control line Occurs after recommended waiting time, or once test is dry
What does evaporation line look like on clear blue?
What does evaporation line look like on clear blue? An evap line (evaporation line) is a faint line that appears after a negative test has dried. Because tests are typically meant to be read three to five minutes after they are taken, the tests are still damp at the time they are read.