Following Directions – Each brand of test may have different instructions for use. There may be different waiting times or different methods for collecting urine. To help ensure accuracy, be sure to read and follow all directions on the package. Checking the expiration date to make sure the expiration date has not passed is also important.
Using after One Week- Although most tests claim accuracy the day of a missed period, research has shown tests are more accurate when used one week after a missed period. In addition, using the test the first thing in the morning can make the test more accurate than if used later in the day.
The Brand of Test-There are many different home pregnancy tests available on the market today. Some are more sensitive to detecting low levels of hCG and would be more able to detect pregnancy early. Most tests, however, are accurate within one to two weeks of a missed period. First Response, Early Result Pregnancy Test was found in a study to be the most accurate test as early as the first day of a missed period.
In addition, women’s bodies may react to pregnancy differently. Some women may take longer for the fertilized egg to be implanted on the wall of the uterus. The hormone hCG is not present until this happens. In addition, some women may have lower amounts of hCG and, therefore, pregnancy will take longer to detect.
Negative Results
If you receive a negative result from a home pregnancy test and you believe you may be pregnant, it is suggested you retake the test several days to one week later. It may be that you have attempted to take the test too early
If you believe you are pregnant, it is important to contact your doctor. The sooner you begin receiving pre-natal care and taking care of yourself and your baby, the better chance you have of having a successful pregnancy and a healthy baby.
References:
“Pregnancy Tests”, 2006, national Women’s Health Information Center, U.S. Department of Health and Human Services
“Pregnant or Not? How to Know” 2007, Melissa Stoppler, M.D., Medicinenet.com
