It is common for everyone who is trying to conceive to read and learn more and more about being pregnant so that she could have the best experience and she could provide the best to her unborn baby. Even someone who is not trying to be pregnant would also like to know about the evaporation line. Evaporation line could be devastating for someone who is not trying to conceive and does not want to be pregnant as it can easily be confused with a positive pregnancy test. Since these tests have started to give so many false negative and positives it is imperative to understand the meaning of evaporation line as to what it is and why does it occur.
No matter how many times you have used pregnancy test kits in the past it is important to always go through the user manual as not all test kits are same and even though version keeps on changing of these kits as the manufacturer keep on building new technologies and advancing their kits. Actually most of the address occurs due to improper usage. It is important that the test is performed properly on the correct day and at the right time in a bacteria free environment.
All pregnancy test kits have their own time frame only after which the second line which confirms your pregnancy would appear. Your urine should have enough amount of hCG levels for the kit to be able to detect it and even a faint second line could mean positive result.
The problem is that nowadays on Internet so much crap is being fed and various technical and medical terms are being used carelessly by people who do not know even a small percentage of it. Evap is the common slang for evaporation line being thrown around without any proper explanation.
What is An Evap Line?
Let's try and understand what an evap line is and how you can tell the difference between it and a positive test result. It's correct meaning could be derived from its name itself and it is a line that gets created when the urine tries to evaporate from the strip. When urine dries it causes the second line on the strip to be more visible and sometimes it can be so strong that the woman can easily confuse it with positive pregnancy.
However if the test was performed properly and the test kit is of good quality it would be a very light shadow line. So it is important to read the user manual and understand that what is the time frame for that particular kit and if any line appears after that time frame that would be evaporation line and not the pregnancy confirmation. As a standard rule the kit results should not be read after maximum of 8 to 10 minutes.
However if in case you see a faint line within the time frame than it is not an evaporation line, it is for sure a pregnancy line because the kit will not show positive under the time frame if in case you are not pregnant. So if you receive a faint confirmation line than it is highly recommended that you take another test after couple of days as it could be false positive or it could be that you are positive but you have tested early.
Your body requires minimum 14 days to be able to produce enough hCG hormone so that any test can satisfactorily detect them and the rate of production of these hormones get doubled after every 48 hours so if in case you will test again after 48 hours the line color would be stronger than the previous test if you are pregnant.
But if in case it took more time than expected for the second line to occur and you still want to confirm and be sure that it is actually an evap line and not a positive result then you can drop some water on the strip where you have dropped urine. If in case it was an evaporation line it would disappear and if the result is positive it will stay there as it is. But keep in mind that this is not something which has been recommended by medical experts and does not produce accurate results.
There are situations where you might see some other line which are not at the exact position as pointed in the strip. These can be evaporation line or a false line which got created because the test did not run smoothly. This result simply means that the kit is faulty and the test is not reliable. If you are in any confusion please do yourself a favor and perform the test again with a new kit.
A re test or a blood test at your Doctor's lab would only be feasible and the best solution under these situations.