Barbiturates

Methodology

Immunoassay (IA)

Reference Range(s)

Barbiturates <300 ng/mL

Alternative Name(s)

Phenobarbital, Secobarbital, Pain Management, Amobarbital, Prescription Drug Monitoring, Butalbital, Pentobarbital

Preferred Specimen(s)

20 mL urine

Alternative Specimen(s)

Urine collected in urine collection container

Minimum Volume

5 mL

Transport Container

Clinical drug test transport vial

Transport Temperature

Room temperature

Specimen Stability

• Room temperature: 14 days

• Refrigerated: 14 days

• Frozen: 30 days

Reject Criteria

Preserved samples

Note: Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.