my daughter was diagnosed last july with celiac in 2019. She had TTG IGA of 180 and has steadily come down to 90 after 6 months . after a year it went to 51.8 in june of 2020 but the latest test results from dec 2020 came down to only 48.8 . I know the normal range is under 20. So I am not sure why in the last 6 months there is not a significant change...