Positive: You are infected with the SARS-Cov-2 virus. You have to immediately isolate yourself and your household in accordance with government guidelines.
Negative: You are not infected with the virus. You still need to be sensible.
Inconclusive: Typically a border line positive/negative result. You will require retesting to achieve a definite result.
Invalid: Occurs only rarely. Usually because there is not enough human material on the swab sample.