groin area pain b b12 injection How to Give a Injection: Step-By-Step Instructions 3 Ways to Relieve Groin
Description
Understanding billing codes will also help you project revenues and optimize your staffs capacity
It is their responsibility to ensure that your dose is sufficient to give a good B12 result, (although you have to ensure they check)

The cost of replacement medication is lower than the cost of weeks of ineffective treatment plus the potential health risks

What you can do in the meantime If you have facial pain: Take pain relievers