ASA Deficiency, Metachromatic Leukodystrophy (MLD)
18 days
Determination of enzymatic activity with p-nitrocatechol sulfate
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Measures enzyme activity in leukocytes to diagnose metachromatic leukodystrophy.
Whole Blood
15 mL
Yellow-top (ACD) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Refrigerated | 4 days |