Sorry, I meant by the vet to get a fecal exam. Even normal vets should be able to get in contact and send it to labs. It's quite expensive, but something I would say is necessary to make sure their in good health and do well. The good news is that if any treatment is needed then meds are usually cheap I've found. If marine toads were captive-bred then there would probably be no need to do this, but as an invasive species it is easy and better to be wild-caught