Hexosaminidase A and Total Hexosaminidase, Leukocytes (Dr. Whitley only)
| Abbrev Code: | MMMISC | ||
| Order Code: | LAB4909 | Order Name: | Hexosaminidase A and Total Hexosaminidase WBC |
| Order Instructions: | Sample must arrive at Mayo the same day as collection. | ||
| Synonyms: | Tay Sachs Disease | ||
| Methodology: | Heat inactivation, fluorometric, semiautomated | ||
| CPT Codes: | 83080 x2 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Thur only and not the day before a holiday. Results are reported within 4-8 days. | ||
| Special Instructions: | A signed copy of a genetic consent form should be in the patient's chart. See Associated Links. | ||
| Compliance: | This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared by the U.S. Food and Drug Administration. |
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| Associated Links: | |||
Collection Instructions
| Specimen: | Whole Blood |
| Optimal Volume: | 6 mL |
| Minimum\Peds Volume: | 5 mL |
| Container: | Yellow (ACD, Solution A) tube available from laboratory |
| Causes for Rejection: | Gross hemolysis. Specimens greater than 96 hours old at the time of testing. |
Processing and Shipping
| Specimen Processing: | Whole blood. Do not centrifuge. Refrigerate immediately. |
| Shipping Instructions: | Ship same day at refrigerated temperature; do not freeze. Must arrive the same evening as collection occurred. |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo) |
| Referral Lab number: | NAGW |
Interpretive
| Reference Range: |
Hexosaminidase Total
Hexosaminidase Percent A
Interpretation is provided with report.
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| Use: | Carrier detection and diagnosis of Tay-Sachs disease. |
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