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Test ID SFINC Cerebrospinal Fluid (CSF) IgG Index, Spinal Fluid


Specimen Required


Only orderable as part of a profile. For more information see SFIG / Cerebrospinal Fluid IgG Index Profile, Serum and Spinal Fluid.

 

Specimen Type: Spinal fluid

Container/Tube: Sterile vial

Preferred: Collection vial number 2

Specimen Volume: 1 mL

Collection Instructions: Label specimen as SFINC.


Reporting Name

IgG Index, CSF

Specimen Type

CSF

Specimen Stability Information

Specimen Type Temperature Time
CSF Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  14 days

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

LOINC Code Information

Result ID Test Result Name Result LOINC Value
INDEX IgG Index, CSF 14117-6
IGG_C IgG, CSF 2464-6
ALB_C Albumin, CSF 1746-7
AIGAC IgG/Albumin, CSF 2470-3
SRATE Synthesis Rate, CSF 14116-8

Useful For

Aiding in the diagnosis of multiple sclerosis and other central nervous system inflammatory conditions using cerebrospinal fluid specimens

Day(s) Performed

Monday through Friday

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

82042

82784

Specimen Minimum Volume

0.5 mL

Reference Values

Only orderable as part of a profile. For more information see SFIG / Cerebrospinal Fluid IgG Index Profile, Serum and Spinal Fluid.

 

CSF index: 0.00-0.70

CSF IgG: 0.0-8.1 mg/dL

CSF albumin: 0.0-27.0 mg/dL

CSF IgG/albumin: 0.00-0.21

Reference values have not been established for patients younger than 18 years.

 

CSF IgG synthesis rate: 0-12 mg/24 h

Method Name

Only orderable as part of a profile. For more information see SFIG / Cerebrospinal Fluid IgG Index Profile, Serum and Spinal Fluid.

 

Nephelometry