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Stable Hepatitis C Virus RNA Detection by RT-PCR During Four Days Storage

Overview
Journal BMC Infect Dis
Publisher Biomed Central
Date 2002 Oct 9
PMID 12366870
Citations 4
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Abstract

Background: Suboptimal specimen processing and storage conditions of samples which contain hepatitis C virus (HCV) RNA may result in a decline of HCV RNA concentration or false-negative results in the detection of HCV RNA in serum. We evaluated the stability of HCV RNA in serum and clotted blood samples stored at room temperature or at 4 degrees C for 4 days with the aim of optimizing the standard procedures of processing and storage of samples.

Methods: Blood from five HCV RNA positive patients was collected in tubes with and without separator gel, centrifuged 1 or 6 hours after collection. Samples were then left 6, 24, 48, 72 or 96 h at room temperature (21.5 - 25.4 degrees C) or at 4 degrees C before determining their HCV RNA level using the COBAS AMPLICOR HCV MONITOR Test, vs 2.0 (Roche Diagnostic Systems).

Results: The logarithm of the HCV RNA level measurements remained within a 0.3 value of the means for 4 days at both temperatures (room temperature or 4 degrees C).

Conclusions: We conclude that blood samples may be collected and aliquoted within 6 h of collection and can be stored at 4 degrees C for 72 hours as proposed by the manufacturer without significant differences in measured HCV RNA level. Our results indicate that lapses in this scheme may still yield reliable results.

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Stability of hepatitis C virus RNA in blood samples by TaqMan real-time PCR.

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