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Variants (Mutations)

Statement on Detection of mutant viruses

Date: August 17, 2023

: Green Spring® SARS-CoV-2 Antigen Rapid Test Kit (Colloidal Gold)

We, Shenzhen Lvshiyuan Biotechnology Co. Ltd. as the manufacturer, hereby declare that the Green Springs SARS-CoV-2 Antigen Rapid Test Kit (Colloidal Gold) can detect the following SARS-CoV-2 virus variants which are listed as "variants of concern (VOC)", "variants of interest (VOI)" and "variants under monitoring (VUM)" by the World Health Organization. VOC refers to the large number and wide range of cases caused worldwide and data confirms the transmission ability, strong toxicity, or reduced effectiveness of vaccines and clinical treatments. VOI refers to a confirmed case of community transmission, or has been found in multiple countries, but has not yet formed a large-scale infection. VUM refers to a SARS-CoV-2 variant with genetic changes that are suspected to affect virus characteristics with some indication that it may pose a future risk, but the phenotypic or epidemiological impact is currently unclear, requiring enhanced monitoring and repeat assessment pending new evidence.
WHO Categories WHO labeling Pango Lineage Date of designation
Variants of Concern (VOC) Alpha B.1.1.7 Sep 20
Beta B.1.351 Mai 20
Gamma P.1 Nov 20
Delta B.1.617.2 Okt 20
Omicron B.1.1.529 Nov 21
Variants of Interest (VOI) Epsilon B.1.427 Feb 21
B.1.429 Jun 21
Eta B.1.525 Feb 21
Iota B.1.526 Feb 21
Kappa B.1.617.1 Mai 21
N/A B.1.617.3 Mai 21
Zeta P.2 Feb 21
Mu B.1.621, B.1.621.1 Sep 21
IHU B.1.640.2 Sep 21
Variants under monitoring (VUM)    BA.1 xAY.4 recombinant Mrz 22
  B.1.640 Nov 21
  BA.1 Nov 21
  BA.2 Feb 22
  BA.2.12.1 Feb 22
  BA.3 Feb 22
  BA.4 Jan 22
  BA.5 Jan 22
  BF.7 Mrz 22
  BA.2.75 Mai 22
  BQ.1.1 Aug 22
  XBB Sep 22
  BQ.1 Sep 22
  EG.5 Feb 23

The new coronavirus (SARS-CoV-2 or 2019-nCoV) is a non-segmented forward RNA virus. This is the cause of the new type of coronavirus pneumonia (COVID-19), which is highly contagious to humans. The SARS-CoV-2 virus has several structural proteins, including spikes (S), envelope (E), membrane (M), and nucleocapsid (N).

The SARS-CoV-2 virus has the characteristics of strong nucleocapsid (N) protein stability. The mutant virus strains that have been found worldwide are derived from the SARS-CoV-2 20B/GR evolutionary strain (lineage B.1.1.7), including many mutation, the mutation location is the spike (S) protein of the new coronavirus, which is the location where the SARS-CoV-2 virus uses to bind to the cell's ACE2 receptor.

The SARS-CoV-2 Antigen Rapid Test Kit, produced by Shenzhen Lvshiyuan Biotechnology Co., Ltd., is used for in vitro qualitative detection of the SARS-CoV-2 virus nucleocapsid (N) protein in human nasopharyngeal, oropharyngeal, anterior-nasal or saliva samples.


It can be seen that the mutation sites of mutated virus strains including EG.5 strain have no effect on the detection rate of the kits produced by our company. The kit is suitable for assay of the SARS-CoV-2 variant virus as listed in the table above.

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