The nurse is right. It is a PPD skin test for TB

來源: MagicHouse 於 2006-12-20 12:58:28 [] [舊帖] [給我悄悄話] 閱讀數 : (595 bytes)
回答: 回複：體檢的幾個問題,請幫忙 由 bluespirit 於 2006-12-20 12:35:33

infection. The result should be read between 48-72 hours after the PPD was injected into your superficial skin layer in your forearm. If after 48 hours, your skin test is negative (diameter5mm), you need to take a chest X-ray to show that you lung is normal.

Some people have done PPD before and have a positive PPD in the medical record. In that case, there is no need to do another PPD. A normal chest X-ray within 3 month is good enough for the doctor to say you are OK.

Hope this can help. Good luck.

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