TST test

I was recetly reading a Tb test on a friend who is also an RN. On the form, the person who injected the PPD signed the credential "LMA" after her name. When I asked who this was and what this stands for, he told me me "I don't know, but maybe 'Licensed Medical Assistant,'" to which I laughed and said that MAs were not licensed (correct?). Then he said "she kinda looked like the employee health secretary." (Laughed again). Any idea what LMA stands for?

Also, he said they put a bandaid on the site. I've heard conflicting info. about if you can or cannot use a bandaid on a PPD site. Eitherway, I don't see the point of one. It's kinda like putting a bandaid on an insulin injection site (yeah, yeah, not exactly the same type of injection, but close enough).
It could be "Licensed Medication Aide." Some states have them, such as Montana.