Posted Date
Effective Date
Test Name
Biotin
Update Type
Test Resumed
CPT Code
84591
Order Code
BIOTN
TEST RESUME
Biotin, Serum
Order Code: BIOTN
Fee Code: 86524 (CPT 84591)
LOINC: 34398-8
Reference Lab: Mayo BIOTN
Mayo Clinic Laboratories Biotin assay issues have been resolved. Standard reporting for this test resumed effective April 9, 2026.