Hexosaminidase A Activity

Primary unit: %
LOINC codes: 23825-3
Tests that measure Hexosaminidase A Activity: Labcorp 1, Quest Diagnostics 1

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Hexosaminidase A and Total Hexosaminidase, Leukocytes 34842

Population	Interval
Hexosaminidase Total	Not stated
≤15 years	≥20 nmol/min/mL
≥16 years	16.4-36.2 nmol/min/mL
Hexosaminidase Percent A	Not stated
≤15 years	20-80%
≥16 years	63-75%

Quest Diagnostics test catalog, 34842

Tests

Check the catalog code, specimen, method and preparation for every test that measures Hexosaminidase A Activity. Select up to five tests to compare them side by side.

Labcorp 1 test

Panels that include this biomarker

Tay-Sachs Disease, Biochemical, Leukocytes 511246
2 analytes · Blood · Fasting not stated · Turnaround 4 - 14 days
Method and collection
Method
Determination of enzymatic activity using heat inactivation
Collection
Refrigerate after collection. Transport to the testing lab using cool pack or Labcorp transport kit. Do not allow sample to freeze. Sample must arrive in the laboratory within four days of collection.
Labcorp catalog page

Quest Diagnostics 1 test

Panels that include this biomarker

Hexosaminidase A and Total Hexosaminidase, Leukocytes 34842
2 analytes · Blood · Fasting not stated · Turnaround Set up: Mon, Thurs, Fri; Report available: 8 days
Method and collection
Method
Fluorometric • Heat Inactivation • Semi-automated
Collection
Draw blood in ACD Solution A or B (yellow-top) tube(s) and send 6 mL of ACD whole blood refrigerated. (Keep specimen cool with frozen coolant April-October. Protect specimen from freezing by placing it in a bubble-pack supplied by Mayo Medical Laboratories, use refrigerated coolant November-March). Specimen cannot be frozen. Do not transfer blood to other containers. Specimen must arrive within 96 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible. New York state clients: Informed consent is required. Please document on the request form or electronic order that a copy is on file.
Quest Diagnostics catalog page

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Sources

Labcorp test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 23825-3
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Hexosaminidase A Activity
Registered studies that measure Hexosaminidase A Activity, on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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