8 hours
Test Updated:
GI Index
GIN
GIN IgG
IgG Index
IgG Synthesis Rate
Index, IgG
Multiple Sclerosis (MS)
ALBS
IGG
ALCSF
IGCSF
ALBUMIN - SERUM
IMMUNOGLOBULIN G
IMMUNOGLOBULIN G-CSF
ALBUMIN-CSF
IGG INDEX RESULT
Looking to order a test?
We’ve provided helpful links to make ordering easy.
Find a RequisitionAll specimens should be accompanied by a requisition.
Submitting SpecimensLearn about how to properly label and where to ship specimens.
Order Kits and SuppliesMLabs provides all the supplies necessary for the collection of specimens.
Test FAQVisit our provider FAQ and learn about common questions to ordering tests.
Test Overview
Nephelometry
Evaluation of blood-brain barrier integrity and detection of local CNS IgG synthesis.
CSF Albumin: 5-34 mg/dL; CSF IgG: 0-4.5 mg/dL; Serum Albumin (Adult): 3.5 - 4.9 g/dL; Serum IgG (Adult): 620-1520 mg/dL; IGG INDEX: 17-29 years: 0.32-0.60, 30-39 years: 0.34-0.59, 40-49 years: 0.36-0.56, 50-59 years: 0.33-0.57, 60-150 years: 0.34-0.58.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Both blood and CSF samples must be obtained on the same day. Blood draw sites should place the CSF label on a copy of the requisition in the upper left hand corner; note "OP Phlebotomy Blood Only" on requistion.
Both blood and CSF samples must be obtained on the same day. Collect blood in SST tube. Centrifuge and aliquot serum into a plastic vial. Refrigerate serum and CSF.
