Case Presentation: A 45-year-old female with past medical history of gastric sleeve in 2018 and follicular thyroid carcinoma status-post total thyroidectomy in 2019, resulting in hypothyroidism, is currently taking Levothyroxine 200mcg daily. Patient presented to the Emergency department with increasing fatigue for the past 3 weeks. She reported progressive shortness of breath on exertion, “loss [...]