本文在此简要介绍一些情况下，一个头发恢复医生可能会为实验室化验。
In this article we briefly describe some of the situations where a hair restoration doctor may order lab tests.
从表面上看来，拿破仑是善终的，但根据对他遗留下来的几根头发所作出的科学化验，发现他是被毒死的。
Napoleon died a natural death to the eye, but by a modern scientific analysis of the few hair left over by him, it was revealed that he had been poisoned.
至于验微量元素，我建议你验血，因为头发会有灰尘或头垢而影响化验结果的。
As for postmortem trace elements , I suggest you a blood test because the hair will be dust or dirt and the impact of the first test result.
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