Posted Date
Effective Date
Test Name Butalbital, Serum
Update Type Reference range changed
CPT Code 80345
Order Code BBT

REFERENCE RANGE CHANGE

 

Butalbital, Serum

Order Code:                  BBT

Fee Code:                     AA214 (CPT 80345)

Reference Laboratory:   Mayo BUTAS

 

The reference range for Mayo Clinic Laboratories Butalbital, Serum assay will be updated to add clarifying language effective July 24, 2024.

 

Reference Range: Peak concentrations (100 mg single oral dose): 1.7 – 2.6 mcg/mL at 2 hours; 1.3 – 1.7 mcg/mL at 24 hours. Toxic concentration: >or= 10 mcg/mL. Cutoff level: 0.5 ng/mL.