9 days
CSF IgG, CSF albumin and serum IgG: Immunologic, serum albumin: spectrophotometry, ratio, index and synthesis rate by calculation
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Assesses intrathecal (within the CNS) IgG production by comparing CSF and serum IgG and albumin levels. Used in diagnosing multiple sclerosis and other inflammatory neurological conditions.
Serum AND CSF
1.5 mL Serum AND 1 mL CSF
Red-top tube or gel-barrier tube and sterile container for CSF
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 months |
| Freeze/thaw cycles | stable x2 |