目的分析生化检测在胸腔积液鉴别诊断的意义。方法检测胸腔积液和血清TP、LDH及其比值,根据Light’s标准判断积液性质。结果本组胸腔积液38例,其中18例为漏出液,20例为渗出液。结合临床修正诊断4例。结论检测积液/血清总蛋白,积液/血清LDH及其比值,可以提高胸腔积液正确诊断率。 Objective To analyze the significance of biochemical detection in the differential diagnosis of pleural effusion. Methods Pleural effusion, serum TP, LDH and their ratio were detected, and the effusion properties were judged according to Light’s criteria. Results 38 cases of pleural effusion in this group, of which 18 cases of leakage, 20 cases of exudate. Combined with clinical diagnosis of 4 cases. Conclusions The detection of effusion / serum total protein, effusion / serum LDH and its ratio can improve the correct diagnosis of pleural effusion.