Results from ELISA are all positively correlated withthose from RE, PPD and AAS (r values are 0. 9044, 0. 9100 and 0. 7026 respectively; P values are less than 0. 0005, 0.0005and 0. 001 respectively).

• 结果：ELISA与火箭电泳法、对苯二胺化学比色法和原子吸收分光光度法均呈正直线相关（r值分别为0.；9044，0