What Is Opiates (Class)?

What it is

Opiates are a class of naturally derived narcotic analgesics (morphine, codeine, heroin metabolites).

Why it matters

Class-level screening flags opiate exposure; lab confirmation identifies the specific opiate.

Specimen

Urine

Cut-off

2000 ng/mL (morphine-based)

Interpretation

Positive = opiates detected (presumptive).

Limitations

Does not detect synthetic opioids (fentanyl, oxycodone); confirm positives.

Related test: Opiates (OPI) Rapid Test — specimen: Urine

Frequently Asked Questions

Do opiate tests detect synthetic opioids? Classic opiate assays do not detect fentanyl or oxycodone — use dedicated tests.