Evaluation of hypothyroidism Evaluation of hypothyroidism. TPOAb+, thyroid peroxidase antibodies present; TPOAb–, thyroid peroxidase antibodies not present; TSH, thyroid-stimulating hormone. Source: Thyroid Gland Disorders, Harrison's Manual of Medicine, 19e Citation: Kasper DL, Fauci AS, Hauser SL, Longo DL, Jameson J, Loscalzo J. Harrison's Manual of Medicine, 19e; 2016 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1820/hmim19_ch170_f001.png&sec=127559642&BookID=1820&ChapterSecID=127559629&imagename= Accessed: October 24, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved