What does CT value mean?
CT value stands for Cycle Threshold value. At its simplest, the CT value represents the first cycle during testing in which a detection occurs. Low CT values indicate a test’s ability to detect positives early in the diagnostic process, or sooner than those of higher CT values. More technically, the threshold is the numerical value assigned for each run of a test. Each threshold value reflects a statistically significant point above an established baseline. The CT value represents the PCR cycle number, or point at which a diagnostic tool first detects a noticeable increase in fluorescence above a baseline signal. When testing identical samples with two separate real time PCR assays the one with the lower CT value would represent the most sensitive assay. When testing pooled PI positive ear notch samples BoVir® detects 95 percent (normal range) with a CT value in the range of 23 28. When testing pooled PI positive blood samples Bovir® detects 95 percent (normal range) with a CT value in
