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. 2011 Jul;49(7):2614–2619. doi: 10.1128/JCM.02636-10

Table 3.

Assay limit of detection determined using quantified RNAa

No. of RNA copies CT values for duplicate assays
InfA swInfA swH1
500 31.30/31.71 33.17/33.56 33.14/33.45
50 34.54/34.49 37.44/37.46 37.05/37.12
5 37.88/38.04 39.54/40.98 39.06/40.32
1 −/− −/− −/−
0.1 −/− −/− −/−
a

The RNA material [Armored RNA Quant Flu A (H1N1) 2009; received from AsuraGen, Inc.] included HA, NP, and M gene region sequences derived from 2009 A (H1N1) pdm influenza virus. −, negative rRT-PCR results.