Can a lab detect the difference between Vicodin, Larcet, and Lortab?

I have been recently prescibed Lortab for pain. My doc wrote my precription for Larcet. They are both Hydrocodone but can a lab drug test detect the difference between Vicodin, Lortab, Larcet and other hydrocodone drugs?? Please help, I am on probation and cannot afford a violation. Thank you
Answer:
They are all the same, but each is often mixed with another.like acetominophin.

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No they are all the same drug just generic forms of Vicodin.

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No they are all the same thing. All are hydrocodone w/ APAP

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