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Galactose-1-Phosphate, Quantitative

Referred out for testing

Source Blood
Mnemonic BGLBL

BGL Test Name field: G1P Quant
Specimen Requirements

1 x 4 mL dark green top sodium heparin tube. 1 x 4 mL dark green lithium heparin tube, NOT PST, is also acceptable.

Minimum 2 mL whole blood (1.5 mL for pediatric patients); a separate specimen is required for this testing (i.e., cannot be combined with other test requests).

Specimen Handling

Do NOT centrifuge. Do NOT aliquot.
Send a copy of the requisition with the specimen.

PSC: 
Send whole blood in original collection tube
and transport on ice to DSC.

RRL:
Send whole blood in original collection tube and transport on ice to ACH.

Extra-regional:
Freeze whole blood in original collection tube
prior to transport to DSC.

DSC:
Freeze whole blood in original collection tube
upon receipt in lab; ensure frozen specimens do not thaw.

Additional Information

This test is no longer available through ACH Biochemical Genetics Lab.
Send the specimen to ACH Biochemical Genetics Lab who will prepare the sample and forward it to an outside reference lab.

This test is for monitoring known galactosemic patients on dietary therapy. For the investigation of galactosemia in a patient, please order Galactosemia Screening Test with confirmatory Galactose-1-Phosphate Uridyl Transferase (G1PUT) testing if screen is abnormal.

Testing Location ACH Biochemical Genetics Lab
Testing Frequency

Sample sent out upon receipt.

Alternate Name(s) Alpha-D-Galactose 1-Phosphate; Galactopyranose 1-Phosphate
Reference Interval Provided on test report.