do not give ur snake meds if u plan to get a culture done, it will not allow the bacteria to grow which will just be a big waste of ur money.
snakes do have bacteria inside of them that is usually kept under control by their immune system, but when their immune system is compromised the bacteria grows and takes over.
if u give ur snake a few shots that do not cure the RI and u stop treating it, the bacteria causing the RI can become immune to the treatment and the bacteria may only be susceptible to that antibiotic.