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. 2020 Jun 24;84:73–78. doi: 10.1016/j.clinbiochem.2020.06.013

Fig. 4.

Fig. 4

Long-term stable test and accelerated stable test of freeze-dried PCR mixes. The small pictures from left to right represent the ORF1ab, N, and S gene assays. (A) The changes in Ct values of the freeze-dried PCR mixes stored at room temperature. (B) The changes in fluorescence intensity of the freeze-dried PCR mixes stored at room temperature. (C) The changes of Ct values of the freeze-dried PCR mixes loaded on a vehicle to simulate long-distance room temperature transport. (D) The changes in fluorescence intensity of the freeze-dried PCR mixes loaded on a vehicle to simulate long-distance room temperature transport. (E) The changes in Ct values of the freeze-dried PCR mixes stored at 37 °C. (F) The changes in fluorescence intensity of the freeze-dried PCR mixes stored at 37 °C. (G) The changes in Ct values of the freeze-dried PCR mixes stored at 56 °C. (H) The changes in fluorescence intensity of the freeze-dried PCR mixes stored at 56 °C.