有人測過heavy metal 嗎？urine pre post for toxic metals。

Because I have low WBC for last couple years and my family doctor recommends that test. 我最近換了家庭醫生，這個醫生比較結合中西醫治療，很多人去看他。

"High levels of metals such as mercury, lead, cadmium, and arsenic have been linked to decreased number and activity of white blood cells."