Posted Date
Effective Date
Update Type Test Methodology Changed
CPT Code 84402, 84403
Order Code MTGRP


Testosterone, Total and Free

Order Code: MTGRP

Fee Code: AA480, AA479

Reference Laboratory: Mayo TGRP

Mayo Clinic Laboratories will update the test methodology from Equilibrium Dialysis to Equilibrium Dialysis/Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) effective June 30, 2022. This update will result in changes to the age and sex specific reference ranges.