L.G.
the ones from Dollar Tree work great!
in February, I had a pregnancy that turned out to be ectopic. my HCG level never got above 400. they not only detected the pregnancy initially, but i tried a little science experiement of my own...i took a test right after i had my blood drawn to check my level. my level turned out to be 97. so, they can show up positive for levels under 100, and they are $1 a piece! don't waste money on expensive tests, especially if you're going to test so early.
i am 5 weeks today, and my dr. wouldn't do a blood test until today, even though i had a positive test one week ago, because if your level is really low, they don't know if it's because it's a bad pregnancy, or if it's too early, so it's really a waste. unfortunately, you really have to wait and see. i hope you get the result you're looking for!