This is what this tests shows, so that you know for yourself:

Test Details
Use

Qualitative and semi-quantitative detection of antibodies to SARS-CoV-2 spike protein receptor-binding domain (RBD). Aid in identifying individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection. At this time it is unknown how long antibodies persist following infection and if the presence of antibodies confers protective immunity. The performance of this test has not been established in individuals that have received a COVID-19 vaccine. The clinical significance of a positive or negative antibody result following COVID-19 vaccination has not been established and the result from this test should not be interpreted as an indication or degree of protection from infection after vaccination.
Limitations

This test should not be used to diagnose or exclude acute SARS-CoV-2 infection. The results should always be assessed in conjunction with the patient's medical history, clinical presentation, and other findings. A negative test result does not rule out the possibility of an infection with SARS-CoV-2. Serum or plasma samples from the very early (pre-seroconversion) phase can yield negative findings. Therefore, this test cannot be used to diagnose acute infection. It has also been reported that certain patients with the confirmed infection do not develop SARS-CoV-2 antibodies. Furthermore, the waning of antibody titers has been reported in some individuals within a range of months after infection, a feature which has also been reported for other coronaviruses.

This test has not been FDA cleared or approved. This test has been authorized by FDA under an Emergency Use Authorization (EUA). This test is only authorized for the duration of the declaration that circumstances exist, justifying the authorization of emergency use of in vitro diagnostics for the detection and/or diagnosis of COVID-19 under Section 564(b)(1) of the Act, 21 U.S.C. 360bbb-3(b)(1), unless the authorization is terminated or revoked sooner. This test has been authorized only for detecting the presence of antibodies against SARS-CoV-2, not for any other viruses or pathogens.
Methodology

This test shows only detects that you have antibodies, but not the significance of the number or what the number means.

@seaspray Hello, Karen. I've missed seeing you on this site. Hope all is well, you're doing better. How's your shoulder now..

I'm soooo late getting to bed, got involved with my laptop and some emails and lost track of time. But, tomorrow, I'll send you a message to catch up a bit. So glad to see your name. I'm working now in different directions, as fun and unusual goodies keep popping up and knocking me around a bit. Heading for sinus surgery soon re infection, infected bones and cyst in sphenoid sinus. May actually be a gift as could be cause of my eyesight issues worsening and hearing loss/aches. Isn't that a hoot? Also, vasculitis is the latest. Will chat soon.

You had this Covid antibody test? My rheumatologist said today I will be getting the booster when it's available since my immune system is so crazy. I suppose you will as well. don't really want it, but I'm staying pretty isolated still, even more than before due to the vasculitis. He told me today to stay pretty isolated. I've even been doing more video consults with our doctors to stay home. They really work pretty well.

I've been wanting to know my antibody level re Covid, so may mention this to my doctor, before the surgery. We'll see.
Anyway, this is an interesting test and one that folks like you can perhaps benefit from getting.
Congratulation on getting better, my friend.
Blessings to you.
elizabeth

S = 561 U/ml is quantitative. Positive, >250, >2,500, etc. is semi-quantitative.