There are 3 tests..
Antibody
Antigen
RT-PCR
A positive antibody test means you have an "active or post infection" and your DNA is producing or has recently produced "antigen presenting cells" to make antibodies that go around and collect and detox the toxic antigens out of your body.
These antibodies last for a few hours, days, weeks to a few months depending on the toxic load amount of antigens and your immune response.
The viral load or antigen tests actually equals to how many viral antibodies you have active at the time of the test so it's also an antibody test.
After the toxic load or antigen infection is gone the genes that activated these viral antibodies go back to being dormant until needed next time.
This is simply your normal adaptive reactive immune response to toxic antigens in real time.
So what does a negative antigen and antibody test mean?
A negative antibody test is supposed to mean you do not have an active infection of toxic antigens bombarding you and/or your body has simply not responded to anything.
A negative or positive test means nothing in regard to specific diagnosis because the antigens that caused the production of the antibodies are actually not specific and likely are normal common antigens found all the time that your body detoxes regularly hence the phrase "common cold"
You should never take this test under any circumstances as it's a complete fraud and any test that requires a stick being shoved up your nose can damage the olfactory bulb and nasal membranes.
A negative or positive RT-PCR test means nothing because the sars cov 2 viral RNA is created by your human DNA and will be expressed when needed to make antibodies to fight off any infection of toxic antigens it is not specific to a fakebelieve virus organism.
PCR tests can pick up non active nucleotide segments that are just in cells as dormant genes that simply have or have not not been expressed recently.
You should never take this test for virus organism detection because it will not tell you anything meaningful as virus organisms are fakebelieve. .
These covid-19 tests are becoming the biggest fraud in human history and possibly the most sadistic joke ever orchestrated on so many people at one time.