Covid-19 IgG did I have corona? Abbott
Blood test for IgG antibodies against the new coronavirus. (COROCG)
NEW Now also available as a post-vaccination titer! This test measures Spike antigen for antibodies after vaccination (30 days after vaccination) starting May 15, 2021.
This test is based on serum. The blood has to be taken intravenously by a professional. If you wish, we can take blood samples at a blood sampling point in your neighbourhood or at your home.
In case of a positive result you will be called first for an explanation, so you are obliged to give 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.
Abbott antibodies against SARS-CoV-2
- COVID-19 IgG antibodies
The test is CE-certified.
see here the press release of Abbott about the approval in the Netherlands
Sensitivity and reliability
Abbott's COVID-19 antibody test has a specificity and sensitivity of greater than 99 percent, 14 days or more after onset of first symptoms
This means that in 1% of the cases the test can show for example another coronavirus, but that, and in 1% of the cases no antibodies are detected while they are there.
More information about the German laboratory that performs these tests can be found here
Test Performance
Abbott Alinity i SARS-CoV-2 IgG
Developer: Abbott
Test: Alinity i SARS-CoV-2 IgG
Technology: High Throughput CMIA
Target: Nucleocapsid
| Antibody | Performance Measure | Estimate of Performance | 95% Confidence Interval |
|---|---|---|---|
| IgG | Sensitivity (PPA) | 100% (34/34) | (89.9%; 100%) |
| IgG | Specificity (NPA) | 99.0% (99/100) | (94.6%; 99.8%) |
| IgG | PPV at prevalence = 5%. | 84.0% | (46.5%; 96.8%) |
| IgG | NPV at prevalence = 5%. | 100% | (99.4%; 100%) |
Explanatory Results:
- Quantitative test suitable for titer determination.
Result lower than 7.1 BAU/ml: no IgG antibodies against the Spike protein of COV2
demonstrated. - Result greater than or equal to 7.1 BAU/ml: IgG antibodies to the Spike protein of COV2
demonstrated.
Note: Around May 2021, the reference values changed, after that the test was also made suitable for measuring antibodies after vaccination.
