TY - JOUR T1 - Thyroid Stimulating Hormone Stability in Patients Prescribed Synthetic or Desiccated Thyroid Products: A Retrospective Study JF - The Annals of Family Medicine JO - Ann Fam Med SP - 452 LP - 454 DO - 10.1370/afm.2545 VL - 18 IS - 5 AU - Rolake Kuye AU - Catherine Riggs AU - Jordan King AU - Rachel Heilmann AU - Deanna Kurz AU - Jessica Milchak Y1 - 2020/09/01 UR - http://www.annfammed.org/content/18/5/452.abstract N2 - The purpose of this retrospective matched-cohort study was to evaluate the stability of thyroid stimulating hormone (TSH) in patients using synthetic compared with desiccated thyroid products. Patients using a thyroid product for the treatment of hypothyroidism were matched 1:1 on age, sex, race/ethnicity, and had a follow-up period of 3 years after the index date. The primary outcome was percent of in-range TSH values. Over 3 years, TSH values in both groups were in-range 79% of the time (P = 0.905). Our results showed no difference in longitudinal TSH stability between desiccated thyroid products and synthetic levothyroxine. ER -