Ct values are inversely related to viral RNA copy number, with Ct values of 30.76, 27.67, 24.56, and 21.48 corresponding to 1.5×104, 1.5×105, 1.5×106, and 1.5×107 copies per milliliter. Negative samples are denoted with a Ct of 40, which was the limit of detection.P
Sources:
1. Viral Load Source: