Multiple antibody tests?

[RacoonRocket]

I had a mild case of covid last month, and when filling one of the many online forms I ticked I wound so am antibody test.
I did it a couple weeks ago, and got the results - yes I have antibodies (unsurprisingly!)

Now I've suddenly got another text on my phone about an antibody test and a second kit has arrived?

Is it part of the science to do two antibody tests with a few weeks of each other? Or is this just a mistake and I don't need to do it again?

TIA

"I ticked I WOULD DO AN antibody test". FFS autocorrect.

I think it’s probably researching how antibodies wane over time. Because you had antibodies they want to check if you still do. If you have a good amount or less since last time.

Yes, when you ticked antibody test it said 2 tests (I clicked that box too)

I think when I ticked the box recently it asked if I would consent to two antibody tests so sounds correct to me.

I'm part of ons study and give my blood once a month for antibodies. They're looking at how quickly they reduce over time too. So doing two tests I would imagine is standard.

Thank you so much for your replies, I obviously didn't read the form properly! I'll get on and do the test then!

These two tests have not to do with waning antibody levels. The first test was to see if you had antibodies from a previous infection prior to the one you've just had. Hence the reason you had to do it within a very narrow time frame during your current illness. Antibodies do not start developing within the first few days of getting ill, they wanted to check if you would have already had antibodies.
The 2nd test, roughly about three weeks after the first one, then tests for antibodies produced as a result of your latest illness.
Unfortunately, however, the NHS then don't give you a quantitative result for you to see the boost in antibodies after the 2nd test... so from the patient's point of view the result is almost meaningless.
I had the same result as you both times. However, personally, I would like to know how much my antibody levels grew by from one test to the next.
My husband, on the other hand, didn't have any antibodies showing in the first test, but had them after the second. Again, we need to see numbers to understand how his body works, but the NHS doesn't provide those.