Community post

It is possible, absolutely. However, I've found that my LH surge normally lasts about 24 hours and when I get a surge that short it's never "real." Typically when I have a positive that only lasts a few hours before it's clearly very negative again it was a mini LH surge that was just enough to cause a positive and then my body will "try again" in a week or so.

If you're temping to confirm ovulation you should see a temp rise within the next couple of days if that brief positive was "real."