Immunoglobulin G, CSF Index IGGSY
| Method(s) | Quantitative Nephelometry |
|---|---|
| Specimen Required | |
| Collect | Cerebrospinal Fluid (CSF) and one 5 mL gold (SST) top tube. Serum specimen should be drawn within 48 hours of CSF collection. |
| Transport | 1 mL CSF and 1 mL serum refrigerated. (Min: 0.4 mL CSF and 0.4 mL serum) |
| Stability | Ambient: 8 hours; Refrigerated: 8 days; Frozen: 1 year (if frozen within 24 hours) |
| Unacceptable Conditions | Grossly bloody or hemolyzed specimens. |
| Schedule | Daily |
| Billing Code | 5010306 |
| CPTCode | 82784 x2 Immunoglobulins; 82040 Albumin, serum; 82042 Albumin, CSF |
| Notes | Separate serum from cells ASAP or within 2 hours of collection. Centrifuge and separate CSF to remove cellular material. |
| Preferred Specimen Collection Device(s) | |
| Reference Interval | |
|
IgG, Serum: 768-1632 mg/dL IgG, CSF: 0.0-6.0 mg/dL Albumin, Serum: 3500-5200 mg/dL Albumin, CSF: 0-35 mg/dL Albumin Index: 0.0-9.0 CSF IgG Synthesis Rate: Less than or equal to 8.0 mg/d IgG Albumin Ratio: 0.09-0.25 IgG Index: 0.28-0.66 |
|
