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１９９５年１月至１９９７年１２月对开展专科门诊的１６所肺结核病痰检实验室实行质量控制，每年不定期监测二次，每次抽查阴性痰检涂片３０张，阳性痰涂片２０张，按照国家结核病控制规划痰结核菌检验质量控制方案进行复检。结果三年共抽查痰涂片２９５１张，其中阴性痰涂片１２４７张，阳性痰检涂片１７０４张，复检符合率分别为９６．６％、９６．１％；痰细胞数、痰涂抹大小、厚薄、染色、脱色的符合率分别为９２．０％、８８．９％、８４．９％、９３．９％、９３．０％。结果表明复检阳性痰涂片符合率为９６．１％，低于国家痰检质控标准，痰涂抹大小、厚薄及染色均与国家标准有一定差距，说明痰片制作质量不高造成镜检过程中出现假阳性或假阴性。
From January 1995 to December 1997, 16 pulmonary tuberculosis sputum testing laboratories carrying out specialized outpatient clinics were put under quality control and were monitored twice a year from time to time. Each time 30 random negative sputum specimens and 20 positive sputum smears , According to the national tuberculosis control program sputum TB test quality control program for re-examination. Results A total of 2951 sputum smear samples were obtained during the three years, of which 1247 were negative sputum smears and 1,704 were positive sputum smears. The coincidence rates of re-examination were 96.6% and 96.1% respectively. The number of sputum cells, sputum smear size The coincidence rates of thickness, dyeing and decolorization were 92.0%, 88.9%, 84.9%, 93.9% and 93.0% respectively. The results showed that the positive sputum smear retest consistent with the rate of 96.1%, lower than the national standard of quality control of sputum, sputum smear size, thickness and staining are some gaps with the national standards, indicating that sputum production quality is not high caused by microscopic examination The process of false positive or false negative.