Yes, 50k IU daily would be an a short term front end loading dose for those having critically low levels but you wouldn't want to take it for an extended period. 

That's 20ppm, not 20,000 ppm. https://www.fda.gov/food/nutrition-education-resources-materials/gluten-and-food-labeling "The rule specifies, among other criteria, that any foods that carry the label “gluten-free,” “no gluten,” “free of gluten,” or “without gluten” must contain less than 20 parts per million (ppm) of gluten."

That is a solid home test--feel free to share other tests you run.

Definitely consult with your doctor before considering such high doses--5,000 IU is likely fine, but 50,000 IU could cause serious issues over time.

Hello all,  I used the Elisa Technology test by EZ Gluten. It is PTM sm certified and tests down to 10,000ppm. I order them online and use at home. Each test takes 25 minutes and it is the most accurate home test I have found.  I am aware that gluten-free labeling indicates that a food has under 20,000 ppm of gluten according to FDA standards.     I have heard discussions about Bob’s Red Mill not conforming to the certified gluten-free certified symbol but continued to use their own gluten-free symbol. I have not done my own deep dive on this topic  -yet! Largely because I have eaten Bob’s Red Mill gluten-free oats and Gluten Free flours of all kinds for years with no reaction. So I trusted their label. This is the first time I have had a reaction to a Bob’s Red Mill product.    I am curious to read more and learn more if anyone knows about Bob’s Red Mill testing practices.    thanks for your help and interest, Janet