TPO and Henoch-Schoenlein purpura: Concerning his medical record, he had Henoch-Schonlein purpura at age 30 and was diagnosed with Hashimoto thyroiditis half a year ago with positive anti-thyroglobulin (TG) (148.3 IU/ml) and anti-thyroperoxidase (TPO) (760 IU/ml) antibodies.