Comparison of a rapid cytomegalovirus pp65 antigenemia assay revealed by immunofluorescence to an in-house assay revealed by immunoperoxidase for diagnosis in solid organ transplant recipient patients

Brazilian Journal of Infectious Diseases

Emerson Carraro²  Jacyr Pasternak¹  Ana Perosa¹  Itacy Siqueira¹  Marines Dalla Vale Martino¹ 

[1] ,Hospital Albert Einstein Clinical Laboratory Microbiology SectionSão Paulo SP ,Brazil

关键词: cytomegalovirus;    antigenemia assay;    immmunoperoxidase;    immunofluorescence;   

DOI  :  10.1590/S1413-86702010000300023

来源: SciELO

【 摘 要 】

Cytomegalovirus (CMV) antigenemia is still one of the two major assays available for diagnosis and monitoring of CMV infections. A commercial rapid test recently available in Brazil for quantification of human cytomegalovirus pp65 antigenemia revealed by immunofluorescence technique was compared with the original in-house method revealed by immunoperoxidase in patients receiving solid organ transplants. Of 80 blood samples tested for CMV antigenemia, 34 (42.5%) were positive: commercial assay detected 33 (97%) and in-house assay detected 20 (58.8%) samples. The numbers of positive cells in the two assays were different, with a median of 4.5 and 12 positive cells obtained by in-house and commercial kit, respectively. Discrepancies between assays occurred in 15 specimens from patients with low-grade antigenemia (median 6 positive cells). The assay-time was reduced in approximately 50% compared to in-house methodology. In conclusion, besides comparable results obtained for both assays, the commercial antigenemia assay provides more rapid and sensitive results.

【 授权许可】

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