Update Type: Test Methodology Changed
Test Updated: 12/14/2022
Test Overview
Test Methodology
Indirect Immunofluorescent assay, RIA, Western blot, Cell Binding assay
Test Usage
Evaluating new onset encephalopathy (noninfectious or metabolic) comprising confusional states, psychosis, delirium, memory loss, hallucinations, movement disorders, sensory or motor complaints, seizures, dyssomnias, ataxias, nausea, vomiting, inappropriate antidiuresis, coma, dysautonomias, or hypoventilation in serum specimens
Reference Range *
By report
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday - Sunday; reflex tests varies
Analytic Time
11 - 14 days
Soft Order Code
ENS2
Laboratory
Sendout
Reference Laboratory
Mayo (ENS2)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in red top or SST tube. Spin and aliquot into a screw capped plastic tube. Send to Specimen processing refrigerated.
Normal Volume
4 mL serum
Minimum Volume
2.5 mL serum
Billing
CPT Code
83519 x 5, 86255 x 14, 86341 If reflexes added: 84182 and/or 86255 and/or 86256