Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
Serum
Performing Lab
Mayo Medical Lab
Epic ID
Other Reference Test
Lab Test Days
Twice per month
Standard TAT
4-17 Days
Collection Information
Specimen Required
1 mL Blood
Container Type
Red Top (No Additive)
Collection Instructions
For 6 hours before specimen collection, patient should not receive heparin. Do not collect specimen from a line that may have been used to infuse heparin or has been flushed with heparin. Reason for testing is required. Completed Mayo Biochemical Genetics Patient Information (T602) is recommended to be submitted with sample.
Processing Information - Lab Use Only
Transport Temperature
Room Temp-OK/Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: 14 Days; Refrigerated: 90 Days (preferred); Frozen: 90 Days
Test Volume Required
0.5 mL Serum
Minimum Test Volume
0.2 mL Serum
Processing Instructions
Order in MayoLink and send with Mayo courier Monday-Friday. Reason for testing is required. Completed Mayo Biochemical Genetics Patient Information (T602) is recommended to be submitted with sample.
CPT Codes
83864 (not genetic)
Revised
8/19/26
Initials
IM