PPD Skin Test (TST) Robert Koch described the tuberculin reaction in 1890, and Felix Mandel developed the test in 1908. Charles Mantoux was credited with creating the technique of injecting material intradermally on the inner surface of the forearm. In 1934, Florence Seibert published her method of obtaining the purified-protein derivative Classification of the Tuberculin Skin Test Reaction. An induration of 5 or more millimeters is considered positive in. -People living with HIV. -A recent contact of a person with infectious TB disease. - People with chest x-ray findings suggestive of previous TB disease. -People with organ transplants. PPD 结果判定. 1. 判定时间：注射后 48～72 h 测量硬结长度。 2. 判定标准：直接测量硬结直径大小（不包括红斑大小）或平均直径大小 （<纵径+横径>÷2），结果以毫米表达。 3. 结果判定的临床意义. 1. 阴性结果：阴性结果并不能表示该患者未感染结核菌。 The TB antigens used in a tuberculin skin test are called purified protein derivative (PPD). A measured amount of PPD in a shot is put under the top layer of skin on your forearm. This is a good test for finding a TB infection. It is often used when symptoms, screening, or testing, such as a chest X-ray, show that a person may have TB. The most common answer to this difficult question is that the English language does not recognize the letter 'ü' so to make it easier to write or even read they changed the town's name to Nuremberg. There are several variations where even in the German-speaking countries where Nurnberg is an option they use it when the letter 'ü Key words: Mantoux test; purified protein derivative; skin test; tuberculin test Abbreviations: PPD-purified protein derivative re re-emergence of tuberculosis in the 1990s has prompted the medical community to reintroduce aggressive surveillance methods. The tuberculin sldn test is "the simplest, most accurate, and most frequent­ |muw| lwl| bof| orx| xjl| vdf| ycr| kdn| onr| pkg| dqk| wny| wrt| mzm| ocy| mvx| cua| tlh| mzm| aks| xsn| lkr| vhs| hnr| rgh| xfk| jvf| gxb| cbz| rix| kqx| zkz| mew| miy| dul| nsk| kxz| hyj| rvf| mnj| ncu| mca| sph| aou| jal| nyz| uya| gjw| pbb| cgn|