The antibody tests aim to detect infections after the recovery of people. However, the presence of antibodies does not mean the presence of long-term immunity to the virus.
Totally, three tests were authorized by the FDA and their use outweighs the risks.
The blood samples are used for the tests and they can be held in the authorized laboratories. The aim of the test not to determine a virus but the antibodies to it.
However, the FDA stated that the tests cannot provide the precise result if the infection is in the early state.
"A negative result may occur if you are tested early in your illness and your body hasn't had time to produce antibodies to infection," the FDA said.
Nevertheless, the experts stated that antibody tests may detect past infections even if the disease was mild or without symptoms. Thus, it will be possible to find out the real number of people who got through the virus.
Chembio Diagnostic Systems and Ortho Clinical Diagnostics developed the authorized tests. Besides, Abbott Laboratories announced recently that it will also release a new test; however, it is not FDA authorized.
As we reported, the Australian scientists from Monash University and Royal Hospital in Melbourne found out that anti-parasitic of broad-spectrum – ivermectin – might suppress the presence of coronavirus in body cells during two days.