Effects of storage temperature and time on qualitative and quantitative detection of cytomegalovirus in blood specimens by shell vial culture and PCR

Thomas C. Roberts, Richard S. Buller, Monique Gaudreault-Keener, Kara E. Sternhell, Kathryn Garlock, Gary G. Singer, Daniel C. Brennan, Gregory A. Storch

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Cytomegalovirus (CMV) infectious titers and DNA levels were determined by quantitative shell vial culture and quantitative-competitive PCR with blood samples from 10 renal transplant recipients with active CMV infection. Blood samples were stored at either room temperature or 4°C and were processed at intervals of 0, 6, 24, 48, and 72 h. All samples were culture and PCR positive at baseline. Whereas the sensitivity of shell vial culture progressively declined, with only 55% positive at 24 h and 10% positive at 48 h, all samples remained PCR positive at all time points. Furthermore, the infectious titer diminished by 83 to 91% by 24 h compared to that at baseline (P < 0.0001), but quantitative DNA levels did not decline over time. Storage temperature had no significant effect on either infectious titer or DNA levels.

Original languageEnglish
Pages (from-to)2224-2228
Number of pages5
JournalJournal of clinical microbiology
Volume35
Issue number9
StatePublished - Sep 1 1997

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