Normally for 1 year.
It is possible (a false negative test result), but not likely.
yes they can affect the results wait a week or two and retake the test if your still unsure get a blood test
Take another test in a week
If it read negative after one or two minutes then that's your result. If you wait around a few hours and look at the same test it want be accurate because the Ph of the urine changes the longer it sits out. It should say some where in the package that the kit came in not to wait after so long to read the result. If you took a second test, like you said you did the next day and it was negative, then you are negative. When you are pregnant you release a hormone called HCG, and the test they put out now are really good at picking up this hormone if you are indeed pregnant.
Yes this can happen. Its best to have a blood test performed. More accuarte.
Yes. A home test can give you a false neg but almost never a false pos. If you test too soon it can be neg even tho youre pregnant cuz your HCG level's not high enough yet. But if you wait til your period's a little late and test it'll usually be accurate.
There's no general rule. The result could be positive and it could also be negative. It depends on how big both numbers are. (neg 5) minus (neg 7) = pos 2 (neg 5) minus (neg 3) = neg 2
Good for him then
if there is a pregnancy, there may be a problem
As you did two pregnancy tests and both were negativeafter a break . Then you may not be pregnant at all.
After taking one that did not show a result @ all, then took the 2nd and it was neg. This last was a light positive line.
What is your question?