Even dogs whose results are in the low normal range may benefit from thyroid supplementation. (whole-dog-journal.com)
Dogs often feel better overnight with thyroid supplementation, but it may take weeks to months to see noticeable changes in a dog's coat or weight. (dogcare.dailypuppy.com)
If the post treatment thyroid level is low to low normal, do I need to give thyroid supplementation? (hyperfeline.com)