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NMDA Receptor Antibody Test (ARPD)
Test Code94199
CPT Codes
86255<br><strong>Limited Access Code</strong>
Physician Attestation of Informed Consent
This germline genetic test requires physician attestation that patient consent has been received if ordering medical facility is located in AK, DE, FL, GA, IA, MA, MN, NV, NJ, NY, OR, SD or VT or test is performed in MA.
Preferred Specimen
2 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
CSF collected in a sterile leak-proof container
Instructions
Serum must be separated from cells within 48 hours of collection.
Note: Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
Note: Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
Transport Temperature
Serum: Room temperature
CSF: Refrigerated (cold packs)
CSF: Refrigerated (cold packs)
Specimen Stability
Serum
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 1 year
CSF
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 28 days
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 1 year
CSF
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Turbid • Bacterial contamination
Methodology
Immunofluorescence assay (IFA)
Setup Schedule
Set up: Sun-Thurs; Report available: 5-7 days
Reference Range
See Laboratory Report
Clinical Significance
Detection of anti-NMDA receptor (NR1-subunit) antibody associated with autoimmune rapidly progressive dementia.
