IgG Synthesis Rate/Index, CSF
Test Summary
The IgG Synthesis Rate/Index is useful in diagnosing and monitoring patients with multiple sclerosis and other inflammatory diseases involving the brain and meninges.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL CSF and 1 mL serum
Minimum Volume
1 mL CSF and 0.5 mL serum
Instructions
Both CSF & serum are required specimens. It is preferred that the collection date and time be the same for both; however, it is acceptable for them to be drawn within 48 hours of each other. If no serum is supplied, the client will be contacted to confirm the order.
CSF collection tube #4 is preferred. Submitting 4th lumbar puncture collection tube minimizes blood contamination.
Transport temperature: Refrigerate CSF specimens at 2-8°C in sterile, plastic CSF vial(s) and send refrigerated (cold packs) to the laboratory OR freeze CSF specimens at -20°C and send frozen samples to the laboratory on dry ice.
CSF collection tube #4 is preferred. Submitting 4th lumbar puncture collection tube minimizes blood contamination.
Transport temperature: Refrigerate CSF specimens at 2-8°C in sterile, plastic CSF vial(s) and send refrigerated (cold packs) to the laboratory OR freeze CSF specimens at -20°C and send frozen samples to the laboratory on dry ice.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 8 hours
- Refrigerated: 7 days
- Frozen: 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Received room temperature • Xanthochromia; RBCs • Hemolysis in CSF
Order Code
IGGIDX
EPIC (Premier) Code
LAB257
Includes
Albumin (CSF and Serum)
IgG (CSF and Serum)
IgG Index, CSF
Synthesis Rate IgG, CSF
IgG (CSF and Serum)
IgG Index, CSF
Synthesis Rate IgG, CSF
CPT Code
- 82040
- 82042
- 82784 (x2)
Billing Code
- 670091
- 670092
- 670093
CPT Statement
Methodology
Nephelometry
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 5 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL CSF and 1 mL serum
Minimum Volume
1 mL CSF and 0.5 mL serum
Instructions
Both CSF & serum are required specimens. It is preferred that the collection date and time be the same for both; however, it is acceptable for them to be drawn within 48 hours of each other. If no serum is supplied, the client will be contacted to confirm the order.
CSF collection tube #4 is preferred. Submitting 4th lumbar puncture collection tube minimizes blood contamination.
Transport temperature: Refrigerate CSF specimens at 2-8°C in sterile, plastic CSF vial(s) and send refrigerated (cold packs) to the laboratory OR freeze CSF specimens at -20°C and send frozen samples to the laboratory on dry ice.
CSF collection tube #4 is preferred. Submitting 4th lumbar puncture collection tube minimizes blood contamination.
Transport temperature: Refrigerate CSF specimens at 2-8°C in sterile, plastic CSF vial(s) and send refrigerated (cold packs) to the laboratory OR freeze CSF specimens at -20°C and send frozen samples to the laboratory on dry ice.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 8 hours
- Refrigerated: 7 days
- Frozen: 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Received room temperature • Xanthochromia; RBCs • Hemolysis in CSF
Result Information
Methodology
Nephelometry
Testing Laboratory
N/A
Reference Range
See Laboratory Report
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 5 days