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Vanderbilt Pathology Laboratory Services

Test Directory



OLIGOCLONAL INDEX CSF (OLG)

Department: Immunology
Test Synonym(s): OLG
CPT Codes: 83916, 82784(x2), 82042, 82040
Reference Range: IgG CSF: 0.5 - 5.9 mg/dL, IgG serum: 694 - 1618 mg/dL, Albumin CSF: 13.9 - 24.6 mg/dL, Albumin serum: 3500 - 5000 mg/dL, Index: 0.28 - 0.66, Oligoclonal Ig: No Oligoclonal
Tube Type: LP tube and red top (no gel)
Specimen: CSF and blood
Alternate Specimen: LP tube and red top (clot activator with gel)
Temperature: Refrigerated
Stability: Refrigerated: 24 hours
Reasons for Rejection: Blood drawn in any anticoagulant
Days Performed: Monday and/or Thursday
Times Performed: Morning
TAT: Up to 7 days
Special Instructions: This assay requires both serum and CSF. Serum should be collected within 5 days of CSF collection. Refrigerate upon collection.

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