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Laboratory Test Directory

NMO (Aquaporin 4) IgG FACS Assay, Serum


Name Method Department Units
Neuromyelitis Optica (NMO), Serum
Flow Cytometry with reflex to Fluorescence-Activated Cell Sorting Assay (FACS) Titer Assay
Send Out Negative or Positive

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

6 mL 3 mL

Gold tube, (SST) with Gel

6 mL 3 mL

Red Tube (no anticoagulant) with Gel

6 mL 3 mL

Room temperature - 3 day(s)
Refrigerated - 28 day(s)
Frozen - 28 day(s)

Specimen Preparation

  • Centrifuge within 4 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Wrong collection tube


When the results of this assay require further evaluation, NMOTS / Neuromyelitis Optica (NMO)/Aquaporin-4-IgG Fluorescence-Activated Cell Sorting (FACS) Titer Assay, Serum will be performed at an additional charge.

CPT Code

  • 86255
  • 86256 NMO/AQP4-IgG FACS titer (if appropriate)