Hexose Tetrasaccharide (Hex4) Assay, Urine (Sendout)
General Information
- Lab Name
- Lab Code
- 376
- Description
Test Information: Urine Hex4 can be used as a biomarker for glycogen storage in skeletal and cardiac muscle. This test may be useful for aiding in the diagnosis of Pompe disease or monitoring patients on enzyme replacement therapy.
Ordering Requirements: A completed Duke Biochemical Biochemical Genetics Request Form should accompany all submissions.
- Forms & Requisitions
- Duke University Biochemical Genetics Laboratory Test Request Form
- Synonyms
- Glc4, Glucose tetrasaccharide urine, hexose tetrasaccharide urine, Pompe urine biomarker
Interpretation
- Method
Ultra Performance Liquid chromatography-tandem mass spectrometry (UPLC-MS/MS)
Ordering & Collection
- Specimen Type
- Urine
- Collection
-
Collect random urine in a screw-cap, preservative-free container.
Collection Note: Preprandial or fasting samples are preferred to avoid dietary artifacts and enhance sensitivity.
- Forms & Requisitions
- Duke University Biochemical Genetics Laboratory Test Request Form
- Handling Instructions
Outside Laboratories: Transfer 1 mL urine to a separate aliquot and freeze at -20°C while awaiting shipment. Transport on dry ice.
Stability: Frozen: Required; Refrigerated: 24 hours; Ambient: 4 hours.
- Quantity
-
requested: 1 mL Urine
minimum: 0.3 mL Urine
Processing
- Processing
Transfer 1 mL urine to a screw-capped plastic urine aliquot and freeze at -20°C.
Login: SEND1-;FREEZE
- RSNDT1: DUKBGL
- RSTYP1: URN
- RTSRQ1: ;HEX4, Urine
Sendouts:
- Order Duke Biochemical Genetics Test: HEX4.
- Request form may be completed by Sendouts if not completed by the provider. Affix "Bill to" and "Send Results To" DLMP Account labels to the requisition.
- Ship samples Monday - Thursday only with sufficient dry ice to ensure that they are frozen upon arrival at Duke.
Stability: Frozen: Required; Refrigerated: 24 hours; Ambient: 4 hours.
Performance
- LIS Dept Code
- Performing Location(s)
-
Sendout Duke University Hospital Biochemical Genetics Laboratory
919-549-0445801 Capitola Drive, Suite 6
Durham, NC 27713 - Frequency
- Performed: Once a week.
- Available STAT?
- No
Billing & Coding
- CPT codes
- Billing Comments
CPTs: 82570, 82542
- LOINC