One cannot tell until and unless there has been a repeat test which has given a false result
False positive is when you dont have an active infection but your results show that you have an infection. This is referred to as false positive.
No, it is not possible to have a false positive test on your own.
False negative is when you have an active Covid 19 infection but your results show that you dont have an infection. This is referred to as false negative test.
False negative can cause the infection to spread unknowingly hence it is worse than false positive.
The kit is an in vitro diagnostic test intended for qualitative detection of SARS-CoV-2 antigen from human nasal samples. This test is authorised to be used by Individuals with symptoms for COVID-19 for Self-Testing at Home.