Pregnancy tests-- accuracy varies depending upon what
A home pregnancy test will tell you
that they're accurate prior to a missed period, that is dicey.
There are a lot of things that can go wrong
with that, just technique of actually doing it correctly.
And one thing people don't think about is urinary concentration,
because you're looking at the HCG in the urine.
If you're going to do that, make sure it's the first morning
void, because that's the most concentrated urine.
You're most likely to be positive and accurate.
A better test is a blood test, because there's
no variation in the accuracy.
And that is probably accurate just prior
to actually missing a period.