“Opiates” immunoassay uses antibodies for morphine metabolites
Will detect natural and some semisynthetic opioids
Heroin
Heroin metabolizes to 6-monoacetylmorphine followed by morphine. You can test for heroin use by testing for 6-monoacetylmorphine.
Morphine
Codeine
Will not detect synthetic opioids
Fentanyl
Buprenorphine
Tramadol
Hydrocodone
Oxycodone
Substances that cause False- Positive Morphine UDS
Poppy Seeds (metabolize to morphine)
Ofloxacin
Rifampin
Fluroquinolone
Reference:
“Addiction Psychiatric Medicine: A comprehensive Board Review” Colon-Rivera, et.al.