Checked by on February 27, 2019 Written by Jennifer Walker.
You suspect you are pregnant and you have taken a home pregnancy test, but suddenly your anticipation turns to confusion when you see a very faint line on the test. What does it mean? Find out why you may faint test line and whether you are pregnant or not.
Pregnancy tests check for the presence of a hormone known as hCG (human chorionic gonadotrophin). It is often called the 'pregnancy hormone' because it is usually only present in your body when you are pregnant. As the pregnancy progresses, hCG levels will rise, making it easier for the test to detect. Some pregnancy tests, such as pregnancy tests ClearBlue Digital, will give a clear answer in words such as 'Pregnant' or 'Not Pregnant', however, many tests will show two lines if you are pregnant.
If the test had worked - and you are using a visual test - you will always see the 'control line'- but if you are pregnant, another line will also develop. Sometimes it is easy to tell whether or not a positive pregnancy test, but sometimes the other lines can be very faint. If you notice, even if faint, the simple answer :. Yes, you are almost certainly pregnant
The power of a positive test line depends on how much hCG in your urine. If the line is vague, it usually means that the hCG levels are low. One of the reasons why the hCG levels may be low could be because you are still very early in your pregnancy. Some very sensitive pregnancy test can detect pregnancy as early as 6 days before your period (5 days before you expect menstruation), but this initial hCG level is very low so you can expect each line can be blurry. As the progress of your pregnancy, hCG levels will rise, so if you choose to test again, you might see a stronger positive line.
You can see how increasing your hCG levels in your urine during the course of early pregnancy in the graph below.
Adapted from: Gnoth C and Johnson S. strip of Hope: Accuracy of Home Pregnancy Tests and New Developments. GeburtshilfeFrauenheilkd 2014; 74 (7): 661-669.
Another reason you might just see a faint positive is because you've been drinking too much fluid. Drink plenty of water or other beverages before taking a pregnancy test can help you produce a urine sample is faster, but it would dilute the concentration of hCG anything. Drink plenty of fluids before testing may leave you with a positive line of faint, or if you test early, even negative results.
It may be easy to think a faint outline is a false positive, but very, very rare to get a false positive result. You can read more about.
Each test pregnancy is different, with some brands use red dye and others, such as ClearBlue, blue dye. To test a red dye, a faint outline will look pink, while the blue dye test will result in a light blue line. See the image below to get an idea of what can be seen as a faint outline.
You can avoid the uncertainty of cryptic line if you:
If you see faint lines and you are still not sure if you are pregnant, you may want to test again in a few days when your hCG levels may be higher. If you are still not sure, see your doctor.
Source:
ClearBlue leaflet
A negative test can be confusing if you suspect that you are pregnant. We are here to help you understand your results
It's normal to have questions when the test was positive and we are here to help you understand what that means results You.
One positive is very rare. Find out what could be causing them and why you might get a negative result after testing positive.
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