CSF IgG Index, CSF IgG:CSF Total Protein Ratio
10 days
CSF IgG, CSF albumin, and serum IgG: immunologic, serum albumin: spectrophotometry, ratio and index by calculation
Test Includes: IgG and albumin quantitation in both serum and spinal fluid, CSF IgG:CSF albumin ratio, CSF IgG index
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Ratio of CSF to serum IgG. Detects intrathecal IgG production in neurological diseases.
Serum AND CSF
1.5 mL serum AND 1 mL CSF
Red-top tube or gel-barrier tube AND sterile (CSF) container
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 6 weeks |
| Freeze/thaw cycles | stable x2 |