Objective- To compare the consistency of the results from detecting HIV-1 antibody in the paired urine and serum specimens from drug users by ELISA. Methods: The paired urine and serum specimens from 273 drug users de...Objective- To compare the consistency of the results from detecting HIV-1 antibody in the paired urine and serum specimens from drug users by ELISA. Methods: The paired urine and serum specimens from 273 drug users detained at a detoxification unit were collected, and the HIV-1 antibodies in the specimens of them were screened by urine and serum ELISA kits, respectively. Results: Of 273 serum specimens, 94 ones showed positive reaction and among 94 counterpart urine specimens, 93 ones also appeared positive reaction. Taking the results together,the consistent rate of HIV-1 antibody screened by urine and serum ELISA kits was 99.6%. Conclusion: The urine ELISA kit, which screened HIV-1 antibody of urine showing almost the same results tested by serum ELISA kit, is reliable. It is proposed that urine ELISA be introduced in many fields.展开更多
The systemic fungal organism, Blastomyces dermatitidis causes blastomycosis in animals and hu-mans. This study was designed to evaluate antibody detection in 55 serial serum specimens from 9 dogs with blastomycosis us...The systemic fungal organism, Blastomyces dermatitidis causes blastomycosis in animals and hu-mans. This study was designed to evaluate antibody detection in 55 serial serum specimens from 9 dogs with blastomycosis using B. dermatitidis yeast lysate antigens produced from two human isolates (B5896;B5931) and two dog isolates (ERC-2;T-58) with the indirect enzyme linked im-munosorbent assay (ELISA;peroxidase system) to determine an optimal lysate antigen(s) for use in the ELISA to detect antibody in the dog serum specimens. The mean absorbance values when the lysate antigens were compared with respect to their ability to detect antibody in the day 0 sera from the 9 dogs were 1.024 (ERC-2), 1.351 (B5896), 1.700 (B5931) and 2.084 (T-58) respectively. All of the reagents exhibited a high level of sensitivity and in all instances the amount of antibody declined as the time interval post-treatment increased, but the T-58 lysate prepared from the dog isolate from Tennessee was the optimal reagent. We continue to evaluate antigens for B. derma-titidis antibody detection in different immunodiagnostic assays.展开更多
目的建立自动化磁珠标本制备法(automated magnetic specimen preparation,MSPE)提取联合液相色谱串联质谱(liquid chromatography-tandem mass spectrometry,LC-MS/MS)检测人血清中睾酮(testosterone,T)方法并评估其性能。方法选取2023...目的建立自动化磁珠标本制备法(automated magnetic specimen preparation,MSPE)提取联合液相色谱串联质谱(liquid chromatography-tandem mass spectrometry,LC-MS/MS)检测人血清中睾酮(testosterone,T)方法并评估其性能。方法选取2023年4~6月在重庆市开州区人民医院就诊的150例患者作为研究对象,采用MSPE联合LCMS/MS方法检测患者的血清睾酮,排除患者血清溶血、乳糜、黄疸等异常,评价该方法的特异度、线性、定量限、回收率、精密度及基质效应。同时比较化学发光免疫法(chemiluminescence immunoassay,CLIA)与MSPE联合LC-MS/MS检测两种方法结果的一致性。结果MSPE联合LC-MS/MS方法检测睾酮的检测限为0.005 ng/ml,定量限为0.05 ng/ml,该方法在0.05~15 ng/ml范围内相关性良好,r^(2)>0.99;批内、批间、总精密度均小于15%;回收率为105.5%~106.2%;血清内标与分析物的基质效应接近;与CLIA方法比较,两种方法检测结果相关性较好(r=0.9971),相对百分偏差小于15%。结论MSPE提取联合LC-MS/MS检测人血清中睾酮性能良好,能够满足人血清样品中睾酮的定量分析需求。展开更多
文摘Objective- To compare the consistency of the results from detecting HIV-1 antibody in the paired urine and serum specimens from drug users by ELISA. Methods: The paired urine and serum specimens from 273 drug users detained at a detoxification unit were collected, and the HIV-1 antibodies in the specimens of them were screened by urine and serum ELISA kits, respectively. Results: Of 273 serum specimens, 94 ones showed positive reaction and among 94 counterpart urine specimens, 93 ones also appeared positive reaction. Taking the results together,the consistent rate of HIV-1 antibody screened by urine and serum ELISA kits was 99.6%. Conclusion: The urine ELISA kit, which screened HIV-1 antibody of urine showing almost the same results tested by serum ELISA kit, is reliable. It is proposed that urine ELISA be introduced in many fields.
文摘The systemic fungal organism, Blastomyces dermatitidis causes blastomycosis in animals and hu-mans. This study was designed to evaluate antibody detection in 55 serial serum specimens from 9 dogs with blastomycosis using B. dermatitidis yeast lysate antigens produced from two human isolates (B5896;B5931) and two dog isolates (ERC-2;T-58) with the indirect enzyme linked im-munosorbent assay (ELISA;peroxidase system) to determine an optimal lysate antigen(s) for use in the ELISA to detect antibody in the dog serum specimens. The mean absorbance values when the lysate antigens were compared with respect to their ability to detect antibody in the day 0 sera from the 9 dogs were 1.024 (ERC-2), 1.351 (B5896), 1.700 (B5931) and 2.084 (T-58) respectively. All of the reagents exhibited a high level of sensitivity and in all instances the amount of antibody declined as the time interval post-treatment increased, but the T-58 lysate prepared from the dog isolate from Tennessee was the optimal reagent. We continue to evaluate antigens for B. derma-titidis antibody detection in different immunodiagnostic assays.
