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. 1988 Oct;26(10):2031–2033. doi: 10.1128/jcm.26.10.2031-2033.1988

Detection of cytomegalovirus from blood leukocytes separated by sepracell-MN and Ficoll-Paque/Macrodex methods.

C V Paya 1, A D Wold 1, T F Smith 1
PMCID: PMC266810  PMID: 2846635

Abstract

Two density gradient separation techniques for separation of blood leukocytes were compared for the laboratory diagnosis of cytomegalovirus (CMV) viremia. Of 510 blood specimens processed by both methods, 76 (14.9%) yielded CMV. Of the 76 positive specimens, 66 (87%) and 65 (86%) were processed by the Ficoll-Paque/Macrodex (F-P/M; Macrodex is dextran 70 in normal saline; Pharmacia, Pisataway, N.J.) and Sepracell-MN methods, respectively. Of the 76 CMV-positive blood specimens, 72 (95%) were detected in shell vial cell cultures, whereas only 42 (55%) were detected in conventional tube cell cultures. The time for recognition of specific cytopathic effects due to CMV in tube cell cultures (8.0 versus 7.1 days), the number of fluorescent foci in each positive shell vial culture (19.3 versus 20.1), and the costs of the reagents ($3.50 versus $2.80) were similar and independent of the leukocyte separation method (F-P/M versus Sepracell-MN). Recovery of CMV from heparinized blood (F-P/M method) was similar to that from EDTA-anticoagulated blood (Sepracell-MN method). The Sepracell-MN method is a rapid and sensitive method for detection of CMV from blood specimens and is recommended as a replacement for the more tedious and time-consuming F-P/M procedure.

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Selected References

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