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Test Code BARCMF Barbiturates Confirmation

Additional Codes

Mayo Access Code: SHO503

Reference Code: 55017

Performing Laboratory

Spectrum Laboratory

Specimen Requirements

Specimen Collection: Urine

Container(s):  Sterile Urine Cup / Plastic screw-top transport tube

Preferred Volume to Collect: 10.0 mL

Minimum Volume to Collect: 1.0 mL

 

Collection Instructions:

  • Urine specimen must be collected on site at lab or office. Do not send collection container home with patient.

  • Keep container upright at all times and check that lid is fastened evenly and securely.

  • Do not open container after collection.

Reference Values

Barbiturates tested for are Butalbital, Secobarbital, Pentobarbital and Phenobarbital.

 

A urine barbiturate (Butalbital/Secobarbital/Pentobarbital/Phenobarbital) result of < 300 is a NEGATIVE result (300 ng/mL is the lower reporting limit for this LCMS confirmation assay). 　

 

Values reported ≥ to 300 should be interpreted as POSITIVE.

Specimen Stability

Specimen Stability

Ambient: 72 hours

Refrigerate: 14 days

Frozen: 365 days

Laboratory Retention: 10 days

Methodology

Liquid Chromatography-Mass Spectrometry (LC-MS)

Specimen Transport Temperature

Refrigerated

Available Monday through Friday, day shift. TAT 2 – 3 days