Methodology
Enzyme Reaction; Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Synonyms
Galactokinase (RBC); Galactokinase Deficiency; Galactosemia
Specimen Type
Whole Blood
Performing Lab
Mayo Medical Lab
Epic ID
Other Reference Test
Lab Test Days
Monday; 9 A.M.
Standard TAT
8-15 Days
Collection Information
Specimen Required
2-4 mL Whole Blood
Container Type
Lavender (EDTA)
Collection Instructions
Whole blood collected in a sodium heparin or lithium heparin (green-top) or ACD (yellow-top) tube is also acceptable. Specimen must arrive at Mayo within 48 hours of draw. Courier pick up Monday-Friday ONLY.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-Only
Specimen Stability
Room Temp: 72 Hours; Refrigerated: 10 Days; Frozen: Unacceptable
Rejection Criteria
Gross hemolysis
Test Volume Required
4 mL Whole Blood
Minimum Test Volume
2 mL Whole Blood
Comments
Diagnosis of glactokinase deficiency, the second most common cause of galactosemia. No special paperwork needed.
CPT Codes
82759
Revised
07-28-17
Initials
SL