In this case, the lab will need to dilute the sample ... Possible causes of a false positive may include: Blood pregnancy tests are more sensitive than urine tests. They are typically used for ...

Pregnancy tests with blue or pink dye typically show one line if the result is negative and two if hCG is detected, meaning the result is positive. If you get any type of second line, even a faint ...

At-home pregnancy tests promise 99 percent accuracy. But the best time to take a pregnancy test and get the most exact result depends on when you conceive.