一位法国研究者发现结核菌素皮肤试验,用圆珠笔标记硬节大小,较传统的用触摸来感觉硬节的大小,可得出更加准确的结果。以后有不少研究者也认为用圆珠笔标记硬节大小较传统方法更可靠。但是有5％的病例经同一观察者的连续2次测量或2个观察者测量同一硬结,却存在差异,都可能将阳性 A French researcher found that the tuberculin skin test, with a ballpoint pen to mark the size of the hard segment, the more traditional feeling of hard touch with the size of the touch, you can get more accurate results. Since then, many researchers also believe that the use of ballpoint pen to mark the size of the hard section is more reliable than the traditional method. However, in 5% of cases, two consecutive measurements by the same observer or two observers measuring the same induration, but there are differences, may be positive