I had mine a couple of weeks ago and it lasted about 20 minutes. They swab your armpit, your bikini line and your nostril to test for MRSA. If they don’t get back to you within a week or so, it means that your all clear and you don’t have it. The nurse asked me a bunch of medical questions like if I had any allergies etc. I also had to sign a few forms and I gave the nurse the name of my GP so they can get your medical history. The nurse also took some pictures for the before and after.
If your referring to the rice test then yeah it is quite accurate if it’s done properly.
Hope this has been of some help, feel free to add me, I’m pre op like you, 31st January xx