Robaxin can show up as an amphetamine in urine drug screens.
Here is what I found while researching the internet for you:
This is a muscle relaxant and although it is not an amphetamine, some of its ring structures could be picked up if the test is not specific. Ask that a more specific test be performed. This will definitely identify amphetamines. Usually drug screens in companies are inexpensive to keep costs down. These pick up several false positives at the price of being less specific. However, I doubt that the company will spend the cash to do the test. You may have to pay for the test. http://www.druginfonet.com/faq/new/DISEASE_FAQ/Drug_Testing.htm
I hope that helps!
You are a good friend to be concerned! If you can send me a list of the medications he is taking, I can surely look them up for you and let you know.
By the way, if these medicines are prescribed by a doctor for him, they shouldn't effect a custody battle, or a job drug screen or what have you. Even with narcotocs etc, if they are prescribed for a medicinal reason by a doctor, all the person would have to do is provide a copy of the prescription or a note from the doctor.
Hope that helps!
The lortabs (hydrocodone) are a from of opiate, and will show up in a urine drug screen. Can he prove this is ordered by his doctor for a medical condition necessitating he take them? If so, he needs to contact this case worker, and possibly an attorney to fight this.
Are there other circumstances involved? If his ex-spouse is making allegations, he has the right to know about them, and also the right to give his side of the story.
I wish both you and your friend the best!