Final answer:
The order of peak plasma levels of local anesthetics varies based on the site of injection, with intravenous injections generally resulting in the highest levels.
Step-by-step explanation:
Local anesthetics are drugs that block nerve conduction when applied locally to nerve tissue. The order of peak plasma levels of local anesthetics based on site of injection depends on various factors, including the drug's properties and the site of injection. Intravenous injections typically result in the highest peak plasma levels, followed by intramuscular and subcutaneous injections.