yes any vet that does stool samples can tell you whats in the poop or not.

But when you bag the poop keep it moist and in the fridge. DO NOT freeze it and get it to the vet in 24-48 hours for best results.

Also runny stools happen time to time with BPs fed a bad mouse. Also happens when they poop then pee on it right afterwards causing some pee-poop.