Hi Pia, and welcome to you and your puppy. You will get lots of help from this forum.
I am sorry I didn't see your thread when you first posted; having some family issues.
I, too, learned much from Dr. Becker's video. She is amazing. That was 3 1/2 years ago, and since that time the forum has helped Tucker go from 60 to 95 pounds!
I apologize, I do not have time to read everything. It sounds like you have had the blood test for EPI? Did your vet tell you to fast your beautiful boy for 12 hours prior to blood being drawn?
And, the test for B12 is valid only if you have not given supplements for I think 10 days, maybe 14.
Having enzymes in his system will not affect the TLI test, though. I am going to post a little information, in case it has not been included yet. Again, I am sorry if this is redundant.
It took me 6 months to get Tucker correctly diagnosed, in part because our wonderful vet had never seen a case of EPI.
This has been copied & pasted. I tried to make corrections to what I wrote originally to an owner whose dog was female:
"I have been involved with the forum for 3 1/2 years, and in that time my Tucker has gone from a 60 pound weakling, to a robust 95 pounder. I feed him mainly
https://www.amazon.sg/Elite-Herding-Buf ... B07QD2QVM3 , but I have also fed him
https://smile.amazon.com/Taste-Wild-Pac ... 483&sr=8-6. Both are popular forum choices for EPI dogs. (edit---Tucker doesn't like Pacific Stream, and he did well on Herding Dogs, but I can no longer afford it. He now eats Taste of the Wild High Prairie recipe, Amazon).
There are four cornerstones to treatment:
ENZYMES Many of us use
https://enzymediane.com/ 6X. 1 teaspoon enzymes/1 cup kibble, add room temp liquid & let sit 20-30 minutes. EVERYTHING he eats has to have enzymes with it. Treats may have to go, for awhile.
DIET Grain free & less than 4% fiber. Some, but not all, EPI dogs do poorly when they are fed poultry. Feed 150% the amount you would feed at isr IDEAL weight, divided into 3, or preferably, 4 meals.
B12 Needs to be above normal, 600+. Tucker's score was 666, but I supplement him anyway. They just tinkle it out if they get too much.
https://www.wonderlabs.com/itemleft.php ... gSEALw_wcB
SID All EPI dogs have it. May be controlled with slippery elm, slippery elm + probiotics, and/or Tylan antibiotic. Good info on this tab
https://epi4dogs.com/sidsibo-in-brief/
Keep a journal, and once you gather all your goodies, make only one change at a time. We have all had to tweak our routine, because each dog is different.
Feel free to ask as many questions as you have, and stay on the same thread here. You may want to share the forum with your vet, too. You've come to the right place, where you and your puppy will get lots of help!"
edit---If you have done the blood test, please share all the results with the forum
Take Care---Pam & Tucker
Tucker is a shepherd/lab mix; he has tested positive on the ScheBo test for EPI, as well as the fasting TLI. Results--- TLI 1.3, Folate 9.7, Cobalamin 666, Lipase 38. Currently taking Diane's Enzymes 4 teaspoons/day, Wonderlabs B12 one capsule per day, two capsules slippery elm/evening, 1 Proviable capsule/day, and Tylan 1/32 teaspoon/ morning (to hold SID at bay). Taste of the Wild High Prairie, 4 cups/day.
PLEASE forgive if I'm replying too late, with information you have already been given.