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Alpha-Galactosidase, Leukocytes

Important Note

Caution: These tests have very similar names, be certain the correct test is selected.

Alpha-GALACTosidase, Leukocytes

Acid Alpha-GLUcosidase, Leukocytes

Galactose-a-1,3-galactose IgE

 


Ordering Guidance


If testing is needed for assessment of meat or meat-derived product allergy, order either ALGAL / Galactose-Alpha-1,3-Galactose (Alpha-Gal), IgE, Serum or APGAL / Galactose-Alpha-1,3-Galactose (Alpha-Gal) Mammalian Meat Allergy Profile, Serum.

 

Carrier detection using enzyme levels is unreliable for female patients as results may be within the normal values. Order GLA / Fabry Disease, GLA Gene Sequencing with Deletion/Duplication, Varies for testing carrier status.



Shipping Instructions


For optimal isolation of leukocytes, it is recommended the specimen arrive refrigerated within 6 days of collection to be stabilized. Pre-analytical processing is performed Monday through Friday and Sunday. This test may be canceled if specimens are outside of stability when processing occurs. Collect and package specimens for arrival on days when processing is performed.



Specimen Required


Container/Tube:

Preferred: Yellow top (ACD solution B)

Acceptable: Yellow top (ACD solution A) or lavender top (EDTA)

Specimen Volume: 6 mL

Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.


Forms

1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing-Spanish (T826)

2. Biochemical Genetics Patient Information (T602)

3. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.

Specimen Type

Whole Blood ACD

Specimen Minimum Volume

4 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood ACD Refrigerated (preferred) 6 days
  Ambient  6 days

Reference Values

≥10.32 nmol/hour/mg protein

An interpretative report will be provided.

Note: Results from this assay do not reflect carrier status because of individual variation of alpha-galactosidase enzyme levels.

Day(s) Performed

Preanalytical processing: Monday through Friday, Sunday

Assay performed: Monday, Thursday

Report Available

2 to 5 days

Specimen Retention Time

White blood cell homogenate: 1 month

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82657

LOINC Code Information

Test ID Test Order Name Order LOINC Value
AGAW Alpha-Galactosidase, Leukocytes 24049-9

 

Result ID Test Result Name Result LOINC Value
606261 Alpha-Galactosidase, Leukocytes 24049-9
606262 Interpretation 59462-2
606263 Reviewed By 18771-6