There are ketostix, there are diastix, and there are keto-diastix (just to confuse you)

The diastix check for sugar in your urine. You don't want to see a reaction on those sticks!

Now that you're stuck with them, though, Dr. Bernstein did have a non-urine test he uses diastix for: if you don't know if food has sugar in it or not, chew some up and then put some saliva on the stick. That'll tell you. I haven't tried it myself.

The keto-diastix have two test spots right next to each other.

Best regards,