Question: how to test if you are gluten free?
Answer: Blood test. You can get a simple blood test to screen for celiac disease, but you must be on a diet that includes gluten for it to be accurate. ... 
Biopsy. ... 
tTG-IgA test. ... 
EMA test. ... 
Total serum IgA test. ... 
Deamidated gliadin peptide (DGP) test. ... 
Genetic testing. ... 
Home testing.