The answer to your question, if taken literally, is: Vicodin does show up as an opiate on a blood test since Vicodin contains hydrocodone, which is an opiate.
If I "read between the lines," then I strongly believe that there is more to your question. That is exactly why I like to explain my answers. Please let Wiki.Answers know if you prefer an explaination along with the answer to your question, or do you only want the answer?
If your question is closer to "Will a sample of blood test positive for an opiate if someone took Vicodin lately?" then the answer is: "It depends." It is more likely than not that a blood sample will test positive for opiates provided that the opiate concentration is sufficiently high. The "sufficiently high" part of the answer is the primary reason no one can give you a definite "Yes" or "No" without additional information. There has to be enough of the drug in a person's blood or urine for it to be detected, and the amount of drug that can be detected depends on the drug a sample is being tested for and on the method used to detect the drug.
opiate
On a drug test Vicodin (Hydrocodone) will show up as an Opiate, it is an Opiate.
Yes - it is an opiate and will show up on standard opiate screens.
yes. it is a opiate.
of course it does.
Yes
Yes, Vicodin will remain in your system for as long as two weeks (blood) thirty days (urine) and 6 months (hair). Vicodin is a codeine derivative an opiate.
Yes, definitely
Vicodin shows up under opiates because it has hydrocodone in it which is an opiate
Yes it does, it shows up as an opiate.
Vicodin is an opiate, and will probably be present in a urinalysis.
yes it will :D