MASP1 and hematocrit: Due to the clear signal near 75 KDa in the lectin blot analysis, serum samples of 131 PTC patients, 131 BTN patients, 130 HT patients, and 128 HCs were used to detect the concentrations of LTF (78.1 KDa) and MASP-1 (79.2 KDa) by ELISA.