Neurology & Neuromuscular
Leukodystrophy Xpanded, Family Member Testing
AC-GDX-J854 · GeneDx
Leukodystrophy Xpanded, Family Member Testing is available through Advanced Consensus and performed by GeneDx. It is part of our neurology & neuromuscular menu and is ordered the same way as any other test on it — tell us the clinical question and we will confirm the pathway and what to collect.
Order this test
Send the clinical question and specimen details and AC confirms the pathway, collection requirements, and logistics.
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- Test code
- AC-GDX-J854
- Performing lab
- GeneDx
- Clinical area
- Neurology & Neuromuscular
- Method
- Next-Gen Sequencing
- Panel size
- 300 genes
- Specimen
- EDTA WB 3 ml
- Turnaround
- ~38 days
Turnaround is quoted end to end — the reference laboratory’s processing time plus courier transit from Jordan, 5 days to Korea and 8 days to the United States. It is indicative, not a guarantee, and may vary with specimen quality and shipment timing.
Sample requirements
Blood: one EDTA (lavender-top) tube — 2-5 mL for children and adults, 1-2 mL for term infants, 0.5-2 mL for neonates (0-28 days). Buccal: loose swabs or dispenser box; stable at room temperature up to 7 days (preferred), 60 days maximum. Extracted DNA: 10 ug for international clients, ideally >=50 ng/uL in >=100 uL of pH 8.0 low-EDTA TE buffer; label with concentration and volume. Ship ambient, overnight, for Monday-Saturday arrival. NOT accepted after allogeneic bone marrow or stem cell transplant, or within 4 weeks of transfusion; hemolysed or clotted specimens are rejected. Buccal cannot be used for proband ultraRapid tests. GeneDx supplies collection kits.
Other tests in Neurology & Neuromuscular
- ACADVL Gene Analysis in Very Long-Chain Acyl-CoA Dehydrogenase (VLCAD) DeficiencyAC-GDX-270
- Amyotrophic Lateral Sclerosis/ Frontotemporal Lobar Degeneration PanelAC-GDX-T404
- Angelman Syndrome/Prader-Willi Syndrome Methylation AnalysisAC-GDX-TJ27
- AR Repeat AnalysisAC-GDX-820
- Arthrogryposis PanelAC-GDX-TG80
- Ataxia Xpanded PanelAC-GDX-J762
For healthcare professionals. Tests are ordered and interpreted in consultation with a qualified physician. Test names are the performing laboratory’s own. Pricing is per-institution and confirmed on request.