Why does hydromorphone show up on a drug test after taking hydrocodone?

In: Medication and Drugs, Laboratory Testing, Drug Tests, Hydrocodone, Painkillers, Percocet and Percodan [Edit categories]

(2) On December 9, 2007 at 12:22 am Danny stewart [0] said:

I took hydrocodone and on my drug test at work it showed hydrocodone and hydromorphone. I am concerned if my perscription for hydro covers both.

(1) On December 9, 2007 at 12:21 am Danny stewart [0] said:

I took hydrocodone and om my drug test at work it showed hydrocodone and hydromorphone. I am concerned if my perscription for hydro covers both.

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