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Galactose-1-phosphate in RBCs-994

Test info

Test name:

Galactose-1-phosphate in RBCs

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Gal1P
Galactose 1
Galactose 1 Phosphate
Galactosemia Galactosemia Analyte
Galactosemia Metabolite(s)
GALT Analyte
RBC GAL1P

Useful for:

Monitoring dietary therapy of patients with galactosemia due to deficiency of galactose-1-phosphate uridyltransferase or uridine diphosphate galactose-4-epimerase

Specimen

Patient preparation information:

Specimens collected following a meal can exhibit postprandial elevations. For infants, collect a specimen immediately prior to feeding to avoid this.

Specimen type:

EDTA whole blood

Collection container:

Lavender (EDTA), 4mL

Volume:

3.0 mL

Minimum volume:

2.0 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting
Do not freeze

Transport container:

Lavender (EDTA), 4mL

Alternate specimen type:

Heparin whole blood
Washed, packed red blood cells (EDTA or heparin)

Alternate collection container:

Dk green heparin (Li or Na), no gel

Alternate transport container:

Dk green heparin (Li or Na), no gel

Transport and stability:

Refrigerated - 72 hours

Ambient - NO

Frozen - NO

Reason for rejection:

Gross hemolysis

Performance

Performing lab:

Mayo Medical Laboratories (GAL1P) via LabCorp (833591): R-NX

Days set up:

TAT:

4 - 10 days

Method:

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

Clinical and Interpretive info

Reference ranges:

Reference interval (normal range): < or =0.9 mg/dL

Therapeutic range: < or =4.9 mg/dL

Billing

CPT codes:

84378

Tracking

Date created:

10/08/2020

Revised date:

09/09/2024

Review date:

09/09/2024