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Dementia, Autoimmune/Paraneoplastic Evaluation, Serum
Test CodeDEMENTIA,AUTOIMM/PARANEOPLASTIC(MAYO)
CPT Codes
86255 ,86255, 86341
Preferred Specimen
4ml of serum from 2 red-top tube
Patient Preparation
1. For optimal antibody detection, specimen collection is recommended prior to initiation of immunosuppressant medication or intravenous immunoglobulin treatment.
2. This test should not be requested in patients who have recently received radioisotopes, therapeutically or diagnostically, because of potential assay interference. The specific waiting period before specimen collection will depend on the isotope administered, the dose given, and the clearance rate in the individual patient. Specimens will be screened for radioactivity prior to analysis. Radioactive specimens received in the laboratory will be held 1 week and assayed if sufficiently decayed or canceled if radioactivity remains.
3. Patient should have no general anesthetic or muscle-relaxant drugs in the previous 24 hours.
Minimum Volume
2.5mL
Transport Container
Plastic vial
Transport Temperature
Refrigerated
Specimen Stability
Serum Refrigerated (preferred) 28 days
Frozen 28 days
Ambient 72 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Gross lipemia
Gross icterus
Methodology
Indirect immunofluorescence assay (IFA); Cell-Binding Assay;Immunoblot;Western Blot; Radioimmunoassay.
Setup Schedule
Monday through Sunday; Reflex tests: Varies
Report Available
8 to 12 days
Performing Laboratory
MAYO Clinic Laboratories
Additional Information
Link to test catalog
Last Updated: October 10, 2023
