孩子一岁半了，上周带他去测了微量元素，我看都在正常范围内，但医生说我们锌有点低，要连续补2个月。大家帮我看看

项目              结果                   参考值

锌                  75.9                   56-210

铁                  63.2                    40-210

钙                  1.46                    1.1-1.6

镁                  1.5                       0.68-2.06

铜                   15.6                    7-31

铅                   2.7                       <10