In the testing industry there is a saying "garbage in, garbage out", meaning that bad specimens produce bad results, so the collection method, the use of collection tools, etc. will affect the downstream test, if the collection tools used and the quality of preservation fluid, etc. are not qualified, the viral load of the samples collected for testing Lack of, and with the modification of the virus survival environment, gradually decomposition, simple cause false negatives due to inaccurate detection, to the new crown prevention and control operations bring unnecessary trouble, and thus the use of professional, quality collection tools to protect the effectiveness of the sample test results.

2, professional, quality virus sampling tube should have the conditions

The new coronavirus pneumonia laboratory testing skills guide (fifth edition) points out that the preservation and delivery of samples: in the use of attention to the preservation period, the specimens used for virus isolation and nucleic acid detection should be tested as soon as possible, the specimens can be detected within 24 hours can be stored at 4 ℃; 24 hours can not be detected specimens should be stored at - 70 ℃ or below (if there is no - 70 ℃ storage conditions, then in - 20 ℃ refrigerator temporary storage). 20 ℃ refrigerator temporary storage). Specimens should be stored separately in special storage or special cabinets. Repeated freezing and thawing of specimens should be prevented during transport. Thus, an excellent qualified virus sampling tube should have the following conditions.

① Ensure the validity of the sample

The activity of the virus particles should be maintained;

It should meet the need to limit or prevent the proliferation of commensal microorganisms and ensure the reliability of diagnostic tests;

The integrity of the virus should be maintained and not affect the next step of the test;

Can adhere to the activity of the virus at room temperature

② Should have a safe guarantee

The virus sampling tube is loaded with potentially infectious material, so the requirements for the packaging container are very strict and should meet the safety requirements such as airtightness:

Safety during transport: to ensure that the sample does not leak during transport.

Safety during storage: to ensure that the sample does not leak or evaporate during storage.