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目的分析临床检测抗-HCV诊断丙型肝炎的不确定性,提高临床诊断丙型肝炎的正确率。方法对125例观察对象采用化学发光法检测血清抗-HCV水平、采用PCR荧光法检测血清HCV-RNA水平;运用加法运算法则并结合抗-HCV和HCV-RNA检测结果对HCV感染进行概率判定。结果 125份标本中,抗-HCV检测值(S/CO)范围为1.05~34.65、平均水平为26.70;检测出HCV-RNA阳性74例(占59.2%)、HCV-RNA阴性51例(占40.8%),抗-HCV检测值(S/CO)在1.05~16.74范围内时,HCV-RNA检测结果均为阴性。结论血清抗-HCV检测值(S/CO)在1.05~16.74范围内而HCV-RNA检测结果为阴性时,发生HCV感染的概率为0.408;血清抗-HCV检测值(S/CO)在17.85~34.65范围而HCV-RNA检测结果为阳性时,发生HCV感染的概率为1。临床上依据抗-HCV检测结果诊断HCV感染时,应采取慎重和理性的态度。
Objective To analyze the uncertainty of clinically detecting anti-HCV in diagnosis of hepatitis C and improve the correct rate of clinical diagnosis of hepatitis C. Methods The serum anti-HCV level was detected by chemiluminescence in 125 subjects. The serum HCV-RNA level was detected by PCR fluorescence method. The probability of HCV infection was determined by addition method and anti-HCV and HCV-RNA test results. Results Among 125 samples, the detection range of anti-HCV (S / CO) ranged from 1.05 to 34.65 with an average of 26.70. The positive rate of HCV-RNA in 74 cases (59.2%) and HCV-RNA negative in 51 cases %), And the anti-HCV detection value (S / CO) was in the range of 1.05-16.74, the result of HCV-RNA test was negative. Conclusions The probability of HCV infection is 0.408 when the serum anti-HCV detection value (S / CO) is in the range of 1.05-16.74 and negative for HCV-RNA test. The serum anti-HCV detection value is between 17.85 ~ 34.65 range and a positive HCV-RNA test results in a 1 HCV infection. Clinically based on anti-HCV test results in the diagnosis of HCV infection, we should take a cautious and rational attitude.