Shapiro A I, Wu T F, Ballon S C, Lamb E J
Obstet Gynecol. 1985 Apr;65(4):545-9.
An immunoradiometric assay and a radioimmunoassay (RIA) were used to quantitate human chorionic gonadotropin (hCG) in the sera of ten pregnant women at term and of six women with gestational trophoblastic neoplasia. The two techniques show good correlation (Pearson correlation coefficient .96) in the assay of pregnancy serum. Because only the RIA, and not the immunoradiometric assay, measures the free beta-subunit of hCG, a comparison of the results obtained by the two immunoassay methods permits a semi-quantitative assessment of the free beta-subunit. The numerical results may not reflect the actual concentration of free beta-subunit in that two different immunoassay methods are used.
采用免疫放射分析和放射免疫分析（RIA）对10名足月孕妇和6名妊娠滋养细胞肿瘤患者血清中的人绒毛膜促性腺激素（hCG）进行定量。两种技术在妊娠血清检测中显示出良好的相关性（Pearson相关系数为0.96）。由于只有RIA而非免疫放射分析可检测hCG的游离β亚基，因此两种免疫分析方法所得结果的比较可对游离β亚基进行半定量评估。由于使用了两种不同的免疫分析方法，数值结果可能无法反映游离β亚基的实际浓度。
