Covid-19 IgG antibodies by vaccine or disease finger prick

8-22 due to insufficient supply, the analysis is taking too long and has been temporarily withdrawn from the range

Finger prick Blood test for IgG antibodies against corona (COROG)

• To test or prove that you have experienced COVID-19 disease
• To measure whether the vaccination is working properly (titer test).

These antibodies appear 4 weeks after the disease or vaccination. 30 days after vaccination, the antibodies should also be visible with this test. With the Astra Zenica vaccination, the antibodies arise later.

The COVID-19 finger prick test

This test is done from Dry Blood . You can use a few drops of blood on the tissue. The needles to prick in the finger and the instructions are included in the test kit.

The gauze with the blood drops will be sent to the lab in the provided shipping material and prepaid envelope.

The blood drop is punched out of the gauze and is determined in the same way as intravenous blood samples, with equal reliability. However, there is no follow-up testing.

The result is sent just like a normal blood test only to the e-mail address you provided.

This test is adapted to the WHO standard and determines quantitative IgG antibodies to the Spike protein (S1) antigen of SARS-COV-2. The test is suitable for the determination of antibodies following vaccination with S1/RDB-based vaccines and acquired infections.

This test is done from Dry Blood . You can let some drops of blood drip on the tissue yourself. The needles to prick in the finger and the instructions are included in the test kit.

You are required to provide your telephone number for a telephone consultation after a positive result.

It is known that infections with MERS-CoV and SARS-CoV-1 often do not produce specific IgG-class antibodies until 10 or more days after the onset of symptoms. This test cannot be used to determine acute COVID-19 infection. The test is only suitable for detecting antibodies produced by the body after a corona infection occurred more than 14 days ago.

EUROIMMUN antibodies against SARS-CoV-2 (ELISA)

• COVID-19 IgG antibodies

The test is CE-certified.

Sensitivity:

With only the Anti-SARS-CoV-2-ELISA (IgG) a sensitivity of 80% is reached 10 days after the first symptoms of illness. For a higher certainty at such a short time after infection see the IgG/IgA Anti-SARS-CoV-2-ELISA blood test.

The EUROIMMUN Anti-SARS-CoV-2 ELISA (IgG) has a specificity of 99% and a sensitivity of 100% after 21 days following the onset of symptoms. This means that in 1% of the cases the test can be positive for another coronavirus, but if SARS-CoV-2 antibodies are formed, they will be detected in 100% of the cases and if no antibodies are found, they are not present. More information about the German laboratory that performs these tests can be found here

Read here the press release why the American version of the RIVM chose this test.

Note that this test has a cut-off value of >384, this means that above this value no exact value is given, so if you are above 384, that is the maximum that can be seen. Whether you have antibodies above this value has almost no influence on your immunity.

Results:

• No antibodies demonstrated: result lower than 25.6 BAU/m
• borderline 25.6 - 35.2 BAU/m doubtful.
• Positive , antibodies demonstrated if result equals or exceeds 35.2 BAU/m.

This test has been adapted to the WHO standard and is suitable for the determination
of antibodies after vaccination with S1/RDB-based vaccines and
completed infections.
Detection of IgG antibodies to SARS-CoV-2 as in the case of previous infection
with SARS-CoV-2 or after vaccination.

If acute infection is suspected, direct detection by PCR test should be done