Distinguishing tramadol from oxycodone

[researchexperiment]

Hello,
I am having trouble figuring out how I could determine if a pill supposedly containing oxycodone is tramadol or something else. I don't see any good reagent result charts containing both of these substances or many painkillers in general.
Thanks

 

[Bearlove]

You could use a Marquis - but the colors are almost identical.

I have never heard of anyone using the standard kits to distinguish the various pain medication.

 

[researchexperiment]

You could use a Marquis - but the colors are almost identical.

I have never heard of anyone using the standard kits to distinguish the various pain medication.

From my somewhat unsuccessful searching, from the standard kits it seems the Mecke reagent would be superior at IDing opiates, however I haven't found any data on Tramadol for Mecke reagent.

I read some documentation somewhere mentioning 12 numbered reagents, is there another set or specific test that can better ID these substances?

 

[Drybone]

You cant tell from the stamp on the pill? Is there no stamp on it? Home made pill?