How long can a reagent cartridge remain open without affecting my results?

Open reagent cartridges can be used for up to 4 weeks without affecting performance. After 4 weeks, circulating cell-free DNA yields are expected to decrease. To ensure the best performance, carefully seal buffer troughs of a partially used reagent cartridge with Reuse Seal Strips when not in use; incomplete sealing of reagent cartridge can reduce the performance.