I used Answer Brand opks and they are realllly sensitive. I ended up getting 7 positives in a row. Kinda freaked me out. But, they were accurate. So, what I ended up doing is using them and when I got a positive, I'd use a more expensive brand for a day or two, to confirm the positive result. It was fun, as a POAS addict, to have so many "options". And, the price was right

G/L