An evaporation line is a slight streak that appears where the positive line on a pregnancy test should be. Evaporation lines are colorless streaks, not faint lines. … 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.
What color are evaporation lines on pregnancy tests?
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.
Why is the line light on pregnancy test?
Some women take a home pregnancy test early in their pregnancies. They often take them before or shortly after their first missed period. Although hCG is present in their urine, they have a lower level of the hormone, resulting in a positive pregnancy test with a faint line.
Does the color of the line on a pregnancy test matter?
Different Line Colors
When taking a pregnancy test, any line in the test indication area is considered a positive pregnancy test, even if it is lighter than the control line. … If there is a line, not an evaporation line, but a true line, no matter how light, you should read that as a positive pregnancy test.
Which line appears first on a positive pregnancy test?
Positive Pregnancy Test
For single window tests a positive result would show both the test line and another line to indicate that you are pregnant. For the two-window tests, in one window a test line would appear and in the second window a plus sign (+) will appear even if it is faint to indicate that you are pregnant.
How do you tell if it’s an EVAP line or positive?
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.
Can a pregnancy test turn positive overnight?
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.
Can you see the lines on an unused pregnancy test?
Only one line will be present if the result is negative (not pregnant) and two lines will be present if the result is positive (pregnant).
Is a faint positive a bad sign?
A faint line on a pregnancy test usually means it’s a positive result – so yes, you’re pregnant. Even the faintest of lines is the detection of the pregnancy hormone, hCG, which can be detected after you have conceived.
What is weak positive pregnancy test?
Occasionally, a laboratory may report a test as ‘weakly positive’ or ‘indeterminate’. This is usually due to a very small amount of the HCG hormone being present in the urine, for example very early in a pregnancy, or when a pregnancy has miscarried.
Should pregnancy test line get darker every day?
Although hCG levels increase exponentially during early pregnancy, that doesn’t mean that the pregnancy test line will necessarily get darker as each day passes.
Is it a good sign if test line is darker than control?
When your test line is darker than the control line, it means that your HCG hormone levels are high enough to steal dye from the control line.
Should you keep taking pregnancy tests after positive?
You don’t have to take another test if you get a positive result, but many women choose to repeat the test just to be sure. If you do get a positive result, book an appointment with your doctor or midwife.
Does it take longer to get a positive pregnancy test with a boy?
according to http://www.babymed.com/pregnancy-news/hcg-levels-and-gender-fetus hcg is higher in females carrying other females, vs females carrying males. this suggests that pregnancy tests would come up later for those carrying boys, and earlier for those carrying girls.
How soon do evaporation lines appear?
A positive result will have a test line that runs from the top of the test window to the bottom with the same thickness and color as the control line. An evaporation line will be a grayish white mark that appears after ten minutes. The best way to know if you are pregnant is to test again tomorrow.
Why can’t you read a pregnancy test after 10 minutes?
The reason for this is due to the urine evaporating if left for too long; it can leave a faint line which can be mistaken as a positive test. It is recommended to not read a pregnancy test after the recommended time frame (10 minutes) as most brands have a possibility of evaporation lines.”