>>42001
>"first" antibodies (igM)
igG
How they took your sample? Blood or mucus from nose/throat?

Had to make Lyme test last year, they also looked for igG and igM.
Are immunoglobulins "one fits them all" type of reaction?
Let's say "pathogen A" comes, the body starts to produce igG as a reaction. On another occasion "pathogen B" comes, the body starts to produce igG as a reaction. Is the two igGs are different somehow, or are the same?
So let's say they test me for "pathogen A" - which I don't have but I have "pathogen B". My body produced igG so those I have. The test shows I have igG and they declare "pathogen A" infected me - just because they did the test on the basis that they were looking for "pathogen A"?
How does this work I wonder?
An acquaintance was ill last year, very ill, some upper respiratory disease, had severe immunreaction to that, they got scared it's maybe covid, they called ambulance. The ambulance did the test and found no covid present. So they have a way to differentiate, but I'm not sure they did the same test what they do in labs - in fact if they could do such test in 10 mins were there a need to visit labs at all (like I had to with Lyme)?
I also know tests are unreliable, some or better but still every has inaccuracies.