Random Urine, Glucotetrasaccharides

Synonyms

  • GLUCOSE TETRASACCHRIDES
  • GLUCOTETRASACCHARIDES, RANDOM, URINE
  • GLUTETSACU
  • HEX4
  • HEXOSE TETRASACCHARIDES
  • LAB11693

Cerner Name

Glucotetrasaccharides, Urine

Clinical Info

Diagnosing Pompe disease, when used in conjunction with acid alpha-glucosidase enzyme activity assays and molecular genetic analysis of the GAA gene

Monitoring Pompe patients on enzyme replacement therapy
May support the diagnosis and monitoring of other glycogen storage disorders; however, glucotetrasaccharide (Glc4) excretion appears to be less consistently elevated in glycogen storage disorders other than Pompe disease
                   This test is not useful for carrier screening

Specimen Sources

Bladder Kidney, Left Kidney, Right Ureter, Left Ureter, Right Urine, Catheter Urine, Clean Catch Urine, Foley Urine, Voided

Specimen Types

Urine

Specimen Volume

3 mL Random Urine (1mL min)

Container

Urine Tube

Collection Instructions

Container/Tube: Plastic Urine Collection Tube
Specimen: 3 mL Random Urine (1mL min)

Transport Instructions

Refrigerated

Specimen Stability

14 Days Room Temperature
28 Days Refrigerated
87 Days Frozen

Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Days Performed

TAT: 5-11 Days

Performing Laboratories

Mayo Medical Laboratories

CPT

82542
82570

PDM

215299

Results
Component Name Base Name Common Name External Name
GLUCOTETRASACCHARIDES, U GLUCTETU GLUCOTETRASACCHARIDES, U Glucotetrasaccharides, U
INTEPRETATION (HEX4) HEX4INT INTEPRETATION HEX4 Interpretation (HEX4)
REASON FOR REFERRAL RSNREF REASON FOR REFERRAL Reason for Referral
REVIEWED BY MPS MPSREVBY REVIEWEDBY, MPS Reviewed By

Result Interpretation

< or =14 months: < or =14.9 mmol/mol Cr
> or =15 months: < or =4.0 mmol/mol Cr

Forms
Endocrine LAB11693 build edit