Hoke C H, Batt J M, Mirrett S, Cox R L, Reller L B
JAMA. 1979 Feb 2;241(5):478-80.
The rate per 1,000 smears showing nonviable Gram-negative bacilli (false-positive smears) increased from a baseline of 10.8 to 38.5 following purchase of new culture-collection devices; the rate decreased to 8.0 following replacement of contaminated culture sets. False-positive reports led to changes in therapy for five patients. In addition to being sterile, commercial culture-collection devices should be certified by the manufacturer as being free of stainable microorganisms or as unsuitable for preparation of Gram-stained smears.
每1000份涂片显示非存活革兰氏阴性杆菌（假阳性涂片）的比例，在购买新的培养物采集装置后从基线的10.8升至38.5；在更换受污染的培养装置后该比例降至8.0。假阳性报告导致五名患者的治疗发生改变。除无菌外，商业培养物采集装置应由制造商认证为不含可染色微生物或不适用于制备革兰氏染色涂片。
