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IgG Index and Synthesis Rate

Order Code
203836
CPT
82042, 82784x2, 82040
Test Details
TAT

9 days

Methodology

CSF IgG, CSF albumin and serum IgG: Immunologic, serum albumin: spectrophotometry, ratio, index and synthesis rate by calculation

Performing Location

Accredited Laboratory Partner

Testing Frequency

Contact Technical Support

Test Overview

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.

Specimen Type

Serum AND CSF

Volume

1.5 mL Serum AND 1 mL CSF

Specimen Container

Red-top tube or gel-barrier tube and sterile container for CSF

Patient Preparation

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.

Collection

This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.

Specimen Stability
Temperature Period
Room temperature 14 days
Refrigerated 14 days
Frozen 6 months
Freeze/thaw cycles stable x2
Order Code
203836
CPT
82042, 82784x2, 82040
Test Details
TAT

9 days

Methodology

CSF IgG, CSF albumin and serum IgG: Immunologic, serum albumin: spectrophotometry, ratio, index and synthesis rate by calculation

Performing Location

Accredited Laboratory Partner

Testing Frequency

Contact Technical Support

Test Overview

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.

Specimen Type

Serum AND CSF

Volume

1.5 mL Serum AND 1 mL CSF

Specimen Container

Red-top tube or gel-barrier tube and sterile container for CSF

Patient Preparation

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.

Collection

This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.

Specimen Stability
Temperature Period
Room temperature 14 days
Refrigerated 14 days
Frozen 6 months
Freeze/thaw cycles stable x2