They\'re treating you with medications that the organism already has a resistance too, thats why they need to find out if the mecA gene or others are part of this particular bacterium\'s plasmid. It\'s only going to cost you more money on co-pays and meds if you delay the PCR test, one thing i\'m sure they\'ll label you community acquired MRSA if they do determine it is a particular strand of S. aureus that has the particular genes for resistance. It\'s your penis, i\'d recommend stern and direct body language, skip the family doc, and see an internal medicine physician or walk into your local emergency room and have them admit you. If they admit you, PCR will be standard especially if its a teaching hospital. If you start experiencing fever, chills, weakness or become hypotensive, you need to walk into your local ER. Topical application of Clindamycin, or Bactrim DS, Linezolid or Rifadin orally may treat your condition as well. Be stern and direct and demand these options. But after you\'re done with the antibiotic dose, immediately start a 30 day min. probiotic regiment. There are recommendations i can make for effective strains of probiotic organisms if you are interested. MRSA already has a known resistance to Vancomycin, but the admitting hospital with probably start on an IV with that. Silver nitrate...I\'m only familiar with silver sulfadiazine for burns, I had a second degree oil burn some years ago and the silver sulfa cream provided tons of relief in the healing process. At this point, your last photo of your testicles looks like a chemical burn, keep it dry. If the purpose of the silver nitrate was to close the wound, it seems overly done, and blistering of your skin has occured, this melting of the skin appearance is a clinical sign of chemical burns. Keep it dry, an epson salt bath won\'t hurt but may facilitate in the healing. I\'m sorry you are experiencing a level of distress, take the recommendations i\'ve already made, and if any clinician wants to pour silver nitrate on your penis/testis say you have an allergic reaction to the compound. You actually might, the very least you are extremely sensitive to it upon topical exposure.