Hi Melissa K-
Have you taken another stool sample in? Parasites and worms can be intermittent and are hard to detect on fecal tests. I’d also continue to give him the Forti Flora or Honest Kitchen’s Perfect Form to help his digestive tract heal.
Is your pup going to be a large dog? I know that goldennoodles can range in size quite a bit depending on size of the poodle.
I hope you get this figured out. I know it’s stressful. My pups had Giardia and it took a while for me to realize it wasn’t the food and to get it treated. Good luck!
