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用酶法检测结核性和非结核性胸水及血清中NO含量，结果显示．结核组NO水平明显升高（15±43μmol／l，）与癌性胸水组比有明显性差异（P＜0．01）。结核性胸水NO含量与SIL－2R呈正相关（r=0．654，P＜0.01），敏感性（97％）、特异性（82％）均较理想。测定购水中NO，对于结核性胸水诊断、鉴别诊断和病因学研究有一定意义。
Enzymatic detection of tuberculous and non-tuberculous pleural effusion and serum NO levels showed that. The level of NO in the tuberculosis group was significantly higher (15±43 μmol/l) than that in the cancerous pleural effusion group (P<0.01). The level of NO in tuberculous pleural fluid was positively correlated with SIL-2R (r=0.654, P<0.01), and the sensitivity (97%) and specificity (82%) were all satisfactory. The determination of NO in purchased water has certain significance for the diagnosis, differential diagnosis and etiology of tuberculous pleural effusion.