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. 1986 Jul;24(1):7–11. doi: 10.1128/jcm.24.1.7-11.1986

Rapid dot enzyme immunoassay for the detection of antibodies to cytomegalovirus.

T M Lin, S P Halbert
PMCID: PMC268821  PMID: 3013934

Abstract

Cytomegalovirus (CMV) antigen was coated onto a white opaque plastic card as small dots inside circles marked in the microtiter plate well pattern. The card with antigen dots could be cut according to the number of test samples to be assayed. Small drops of undiluted serum samples, goat antibodies to human immunoglobulin G labeled with alkaline phosphatase, and finally substrate (5-bromo-4-chloro-3-indolyl phosphate) were sequentially added to the antigen spots and incubated in the open air at room temperature for 5 min each. The antigen dots showed blue color for sera with immunoglobulin G antibodies to cytomegalovirus but no color for those without. The developed antigen dots could be rinsed with water and kept as permanent records. For the assay of a large number of serum samples, a modified procedure with serum diluted 1:10 and longer first two incubations (20 min each) was found to be more comfortable to perform. The results of this assay for 123 undiluted and 256 diluted serum samples revealed very good correlations with those obtained by a commercially available test kit for immunoglobulin G antibodies to cytomegalovirus with 97 and 99% agreement, respectively. This dot test was very reproducible and required no instrumentation. The reagents, including coated antigen dots, are stable at room temperature for at least 2 months and are ready for use.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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