PCR
For RSA: Just to emphasise that if you are arriving by air, you need an RT-PCR. They do NOT routinely accept Antigen /Antibody / LAMP / Rapid PCR. The airlines know this, and chances are you will be denied boarding if you do not have an RT-PCR, taken no more than 72 hours of boarding your ticketed flight to RSA. NB therefore if you have a separate flight to your departure airport it doesn’t count, as only the time of your actual ticketed original departure flight to RSA, counts (transit is fine). The PCR must be done in a laboratory, with all details, and electronically signed. They do not accept “home” or “mailed” self tests.
I also recommend you download the SA Port Health Arrival form, and fill it out before you leave. Mainly for Covid contact tracing. They may issue it on board, and you can get one on arrival, but extremely tedious standing in the temperature screening line, frantically filling it out, and trying to remember your seat number.