Posted Date
Effective Date
Test Name
Myelin Basic Protein, CSF
Update Type
Test Code Change
CPT Code
83873
Order Code
AMABL
NEW ARUP TEST CODES
Myelin Basic Protein
Order code: MBP
New Order Code: AMBP
Fee Code: 21977 (CPT 83873)
LOINC: 2638-5
Reference Lab: ARUP Laboratories (0080515)
Michigan Medicine Laboratories Sendout Lab will be launching a new interface with ARUP Laboratories effective February 3, 2026. The list of tests will be activated in a phased manner, beginning with Islet Cell Cytoplasmic Antibody, IgG, Mannose Binding Lectin, Myelin Basic Protein, Phosphatidylserine and Prothrombin IgG/IgM, P/Q-Type Calcium Channel Antibody, and Retinol Binding Protein. Please note that these are not new tests, just new test codes.