China has developed a rapid test that determines antibodies to coronavirus

Chinese scientists have developed a test similar to the pregnancy test, which can quickly (within ten minutes) and with high accuracy detect the presence of antibodies to a new type of coronavirus (SARS-CoV-2) in the blood. It is reported by ACS Analytical Chemistry.

It is emphasized that tests for antibodies to SARS-CoV-2 are extremely important for determining the number of patients who develop and develop immunity to a new coronavirus infection. A new test by Chinese scientists is based on the method of the so-called side-stream immunoassay, the technology of this development is similar to the effect of a traditional pregnancy test.

Scientists have attached protein from the envelope of the virus to a specific area of ​​the strip coated with nitrocellulose. During the test, blood serum (blood plasma lacking fibrinogen) is applied to the strip so that it flows from one end of the strip to the other. Antibodies against viral protein bind to a specific area on the strip and begin to glow. This fluorescence detects antibodies much more sensitive than in pregnancy tests. The result can be seen with the naked eye.

Note that these test systems are designed to conduct research in laboratory conditions, since they require separation of serum from blood taken for analysis.

Recall IA REGNUM reported that scientists at Kazan Federal University (KFU) conducted the first test for antibodies to a new coronavirus infection in the format of an enzyme-linked immunosorbent assay (ELISA), the next step will be the creation of test strips.

Read earlier in this story:
                            Kazan University is preparing to create test strips for coronavirus


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