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Recommendations when to order or not order the test. May include related or preferred tests.
Initial test to diagnose or rule out galactosemia.
New York DOH Approval Status
Indicates whether a test has been approved by the New York State Department of Health.
This test is not New York state approved. There are no New York state-approved laboratories available. The performing laboratory will submit an NYSDOH Single Use Permit (SUP) upon receipt of order. If SUP is approved by NYSDOH, testing will be performed.
Specimen Required
Patient PreparationInstructions patient must follow before/during specimen collection.
CollectSpecimen type to collect. May include collection media, tubes, kits, etc.
Green (Sodium or Lithium Heparin), Lavender (K2EDTA), or Pink (K2EDTA). Collect on ice.
Specimen PreparationInstructions for specimen prep before/after collection and prior to transport.
DO NOT FREEZE. Transport 7 mL whole blood. (Min: 3 mL)
Storage/Transport TemperaturePreferred temperatures for storage prior to and during shipping to ARUP. See Stability for additional info.
Refrigerated.
Unacceptable ConditionsCommon conditions under which a specimen will be rejected.
Hemolyzed specimens.
RemarksAdditional specimen collection, transport, or test submission information.
StabilityAcceptable times/temperatures for specimens. Times include storage and transport time to ARUP.
Enzymatic Assay/Liquid Chromatography-Tandem Mass Spectrometry
Performed
Days of the week the test is performed.
Mon, Wed, Fri
Reported
Expected turnaround time for a result, beginning when ARUP has received the specimen.
2-5 days
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Greater than or equal to 19.4 U/g Hb
Interpretive Data
May include disease information, patient result explanation, recommendations, or details of testing.
One U/g Hb is equivalent to one umol/hour/gram of hemoglobin (umol/hr/g Hb).
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Values for enzyme activity only may not differentiate between variant form of galactosemia or carriers. For a more accurate evaluation of patients suspected to have galactosemia, the preferred test is Galactosemia (GALT) Enzyme Activity and 9 Mutations (ARUP test code 0051175). To monitor therapy in patients with galactosemia, order Galactose-1-Phosphate in Red Blood Cells (ARUP test code 0081296).
Hotline History
N/A
CPT Codes
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
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