Therapeutic Drug Monitoring
Gas Chromatography (GC)
Suggested CPT Code(s)
New York State Approval Status


Turnaround Time

8 days

Test Includes
1 Barbital Gas Chromatography (GC) mcg/mL 0.5 Hypnotic, Sedative

Test Also Known As
Barbitone; Embinal; Malonal; Medinal®; Veronal®; Vesperal
Specimen Type
Serum or Plasma
Requested Volume
2 mL
Minimum Volume
0.7 mL
Special Handling
Promptly centrifuge and separate Serum or Plasma into a plastic screw capped vial using approved guidelines.
Specimen Container
NMS Labs has no experimental or literature-based data regarding the choice of specific specimen collection containers for this test.

Additional Collection Instructions

Transport Temperature
Light Protection
Not Required
Rejection Criteria
Polymer gel separation tube (SST or PST).

Rejection criteria pertain to clinical specimen submissions only.

Room Temperature: 14 day(s)
Refrigerated: 14 day(s)
Frozen (-20 °C): 12 month(s)
1 Barbital Gas Chromatography (GC) mcg/mL 0.5 Hypnotic, Sedative

Interface Map

LOINC® Information