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. 2015 May 26;11(7):1865–1871. doi: 10.4161/21645515.2014.990854

Table 2.

Linearity between the number of plasmid copies/reaction and Ct values to estimate the limits of detection and quantification for the Yellow Fever Virus RT-qPCR

Plasmid Copy Number (copies/reaction) Ct mean Standard Deviation Number of positive replicates/Number of replicates
107 16.93 0.16 8/8
106 20.59 0.06 8/8
105 24.08 0.11 8/8
104 27.50 0.13 8/8
103 31.10 0.41 8/8
102 34.17 0.49 8/8 QL
50 34.88 18.07 5/8
25 35.53 18.40 5/8 DL
12.5 36.13 18.70 3/8
6.2 ND - 0/8

Ct = Threshold Cycle; ND = Not Detected; QL = Quantification Limit; DL = Detection Limit.