Does a cmp blood test show amount of medication in your system or a general health panel blood test show medications?

A Comprehensive Metabolic Panel is a group of tests that are designed to show electrolyte levels, glucose levels, organ function, such as kidney and liver… It does not show medication or drug levels in the body; this requires specific testing to determine the medication or drug and level. The CMP results may tip the doctor off, causing him/her to request other tests, which may include a drug test. Not all drug tests are equal; some require that a doctor request a specific drug test, or a testing for a specific drug.

I am on a heavy duty pain narcotic; I have to have a blood test and urinalyses twice a year, to ensure that I am not taking other drugs along with my prescribed medication, as well as over indulging and taking more than what is prescribed for me. This requires a general drug blood test and a drug urine test, which can determine most drug use, but he must also run a specific test for the drug that I am prescribed, since it does not show up on normal drug tests.