TPO and hematocrit: Recent studies have shown that PV plays an essential role in reducing the titers of TPO-Ab, TG-Ab, and Th17 cells in autoimmune and inflammatory disorders, including HT (Wang et al., 2019; hui ZRGwsbydwy, 2000; Yang et al., 2007; Zhang, 2014; Hu et al., 2019; Ala et al., 2015; Wiersinga and Wilmar, 2001).