Antidepressant seem to work on various system or combinations of systems: one in the norepinephrine system, one in the serotonin system, one in the dopamine system. Some antidepressant target two of the systems. Some target three systems. Some antidepressants work for reasons that are not clear.
So it is nice these tests exist. They might help to tailor treatment to what a patient really needs so there is not a need to go through the trial and error ordeal.
I am woefully ignorant about a lot of this, sadly.
I sure hope this test proves helpful to you. I would take this test but my antidepressant has worked for me for plus or minus 50 years.