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对２４５份胸水（癌性胸水１５２份；非癌性的炎性胸水３５份，非炎性胸水５８份）的ＴＰ、Ｃｈ、ＬＤ、ＳＡ、Ｃ反应蛋白，Ｒｉｖａｌｔａ试验和比重进行了联合检测。结果表明，在癌性与非癌性的非炎性胸水鉴别中具有一定意义。在癌性与炎性胸水鉴别中，除ＬＤ、ＳＡ、有一定使用价值，其余则不理想。脱落细胞在癌性胸水诊断中，敏感性较低（６１．５４％），但具有较高的特异性，误诊率低等优点。结果表明：各指标均有一定的局限性，不能以此作为癌性与非癌性胸水鉴别的依据，必须与临床、组织病理、影像等其它检查相结合，方可确保癌性与非癌性胸水诊断的有效性
TP, Ch, LD, SA, C-reactive protein, Rivalta test, and specific gravity of 245 pleural effusions (152 for cancerous pleural effusions, 35 for non-cancerous inflammatory pleural effusions, and 58 for non-inflammatory pleural effusions) were co-detected. The results show that it has certain significance in the identification of cancerous and non-cancerous non-inflammatory pleural effusions. In the identification of cancerous and inflammatory pleural effusions, except for LD and SA, there is a certain use value and the rest is not ideal. Exfoliated cells have a lower sensitivity (61.54%) in the diagnosis of cancerous pleural effusion, but they have higher specificity and low misdiagnosis. The results show that: all indicators have some limitations, which can not be used as a basis for the identification of cancerous and non-cancerous pleural effusions, and must be combined with clinical, histopathological, imaging and other tests to ensure cancerous and non-cancerous Validity of pleural fluid diagnosis