As the physician noted, now in Russia, far from everywhere, the counting of antibodies to COVID-19 has been transferred to the WHO standard. If in paid laboratories this has already been done, in state laboratories – no, more precisely, not in all.
In general, the values of six different systems for determining the amount of antibodies should be brought to a single indicator: ARCHITECT (from Abbott), Roche, Euroimmun, Vector-Best, DiaSorin, Mindray. According to the expert, the most accurate results are provided by the system from Abbott, but Mindray is suspicious, so he does not advise using it.