Curved handle? False bfp?

Cas • Parker Drew 5/2/17🌈
Tell me about these false positives ladies. I've heard the first response curved handle causes false positives? Has it been shown why or how many times this ha happened? I'm really intrigued why they haven't been recalled if they're not accurate. Tell me your stories with them or why you think they're bad or even why you prefer them!! Xoxo.