Research Article

A Quantitative Real-Time RT-PCR Assay for the Detection of Venezuelan equine encephalitis virus Utilizing a Universal Alphavirus Control RNA

Table 3

Relative threshold cycle (RTC) amplification efficiencies of synthetic VEEV (sVEEV) RNA constructs.

TemplatesVEEV
−1
sVEEV
−2
sVEEV
−3
sVEEV
−4
sVEEV
−5
sVEEV
−6
sVEEV
−7
sVEEV
−8
sVEEV
−9
sVEEV
−10
sVEEV
−11
sVEEV
−12
sVEEV
−13
sVEEV
−14
sVEEV
−15

DilutionCtCtCtCtCtCtCtCtCtCtCtCtCtCtCt

10−417,320,619,419,617,421,118,617,818,318,520,919,620,224,621,5
10−521,424,423,423,721,325,022,321,321,722,224,523,124,128,225,0
10−625,228,327,127,325,228,726,525,325,425,828,027,127,831,728,6
10−728,931,830,831,229,032,430,228,928,729,331,630,931,935,532,4
10−831,834,634,234,732,736,133,732,232,232,835,334,935,639,136,1

Slope |−2,99|
0,9969
−2,91|
0,9959
−3,05|
0,9992
−3,1|
0,9995
−3,16|
0,9998
−3,08|
0,9998
−3,16|
0,9992
−2,98|
0,9993
−2,85|
0,9999
−2,92|
0,9999
−2,95|
1
−3,17|
0,9997
−3,18|
0,9999
−2,99|
0,9999
−3,00|
0,9998

Mean ΔCt0,0−3,0−2,1−2,4−0,2−3,7−1,4−0,2−0,3−0,8−3,2−2,2−3,0−6,9−3,8
Mean RTC1,00,120,240,190,870,080,390,890,800,570,110,220,120,010,07

ΔCt is calculated as mean difference of corresponding Ct values compared to unmodified reference template sVEEV-1 across all template dilutions. RTC is calculated according RTC = .