What Is Morphine?

What it is

Morphine is a naturally occurring opiate analgesic; also a metabolite of heroin and codeine.

Why it matters

Morphine screening detects opiate use and heroin/codeine exposure.

Specimen

Urine

Cut-off

300 ng/mL

Interpretation

Positive = morphine detected (presumptive).

Limitations

May reflect prescription opiates; confirm to identify source.

Related test: Morphine (MOP) Rapid Test — specimen: Urine

Frequently Asked Questions

Does a morphine test detect heroin? It detects morphine and 6-MAM may indicate heroin use; confirm to identify the source.