This is what I have done when I have to test outside of my home. Put your opk in your pocket/hand and take it with you to the bathroom. Tear it open and empty it out, rip down the sides of the packet a bit so that you widen the opening. Use the packet as a cup and dip your opk. It's a little tricky but it works in situation where you don't need everybodys nose in your business. :)
