回复：医生如果没有在你的 体检表上写他的意见, you are fine.

多数白人医生do not know Chinese people health well. Most Chinese people have TB positive and X-ray negative and this is very normal because their body has TB antobies to resist TB disease. If these people take the medicine, they will lose the immunization to TB. So, without a special Doctor's approval, you had better not take this kind of medicine or be careful to take this kind of medicine.