Hello, I'm looking for clarification to which covid test I need. I understand it needs to be RT-PRC but I have found multiple tests. All ranging in result times. Some say RT some don't.

Real-time Reverse Transcription-Polymerase Chain Reaction (RT-PCR)

Rapid Polymerase Chain Reaction (RT-PCR)

Polymerase Chain Reaction (PCR)

I'm in the US if you have any recommendations on where to go.

Any clarification on exactly which test is needed and if the test results need to specifically say anything, would be greatly appreciated. Thank you!