Every 4 or 5 days, my horse had no appetite, yet it wasn't colic. I tried various gut remedies but that didn't change anything. This test identified that one supplement he was given was 90% level 3/level 2 food intolerance ingredients. Stopped giving him the supplement and he is back to normal. Never would have guessed it was a common supplement that was causing him distress. Thanks 5strands!