Nucleic acid detection of new coronavirus infection is the most effective laboratory diagnostic method due to its high sensitivity and specificity.

As an RNA virus, the new coronavirus is unstable and easily degraded. Sample damage is one of the reasons for false negative results in nucleic acid testing. The quality of the sampled nucleic acid will directly affect subsequent testing. Using inappropriate sampling products will lead to collection. The target load is not high, or it gradually decomposes with the change of its microenvironment, and finally causes false results. For the pre-nucleic acid detection stage, the most important consumable is the sampling tube. High-quality sampling products can ensure the effectiveness of the sample and reduce the Risk of error results.