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Epic Code LAB1230093 IgG Index Synthesis CSF Careset

Important Note

Note: 2 specimen types - both specimens should be drawn and received together.

**2 Gold Top (Serum Separator Tube – Gel) are preferred.**

Test Name Alias

.IgG Index Ser | .IgG Index Synth CSF | 11592 | 11593

Interface Order Alias

11593

Panel Information

IgG Index, Serum

IgG Index Synth, CSF

Specimen Requirements

Submit both of the following specimens:


Specimen Type: Serum
Container/Tube: Gold Top (Serum Separator Tube – Gel)
Volume: 1 mL (2 Gold Top tubes preferred)
Minimum volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours


Specimen Type: Cerebrospinal Fluid (CSF)
Container/Tube: Spinal Fluid Collection tube or pour-over tube
Volume: 1 mL
Minimum volume: 0.2 mL CSF
Collection Instructions: Centrifuge and analyze immediately upon arrival in the lab.

Special Instructions

Serum drawn within 72 hours of CSF collection is acceptable. Serum MUST be collected in order to calculate CSF IgG Index and Synthesis. 2 serum tubes are preferered.

Lab Staff Instructions

Lab Central Staff: All CSF specimens to Hematology first.

Specimen Stability

CSF

Ambient: 12 hours

Refrigerate: 3 days

Frozen: not recommended

Laboratory Retention: 30 days

 

Serum

Ambient: 12 hours

Refrigerate: 3 days

Frozen: aliquot and freeze for longer storage

Laboratory Retention: 72 hours

Test Frequency

Available daily, usual TAT 1 – 2 days

Reference Range

Albumin CSF
13.0 – 25.0 mg/dL

 

CSF IgG Index
0 – 0.7

 

CSF IgG Synthesis
0 – 3.3 mg/day

 

IgG CSF
0.5 – 5.9 mg/dL

 

Protein CSF
0 up to 10 Days: 40 – 120 mg/dL
10 Days up to 60 Days: 20 – 70 mg/dL
60 Days and up: 15 – 60 mg/dL

Performing Department

CHEMISTRY

Performing Department Laboratory Location

Spectrum Health Regional Laboratory

Methodology

Immunoturbidimetric

CPT

82040,82784,82042,82784,84157

CDM Code

4058062, 4058212

4024048, 4058518, 4058650

Epic Test ID

1230100138;1230100139

Mayo Access Code

SHO11593

Reviewed Date

3/23/2022

Beaker Names

Beaker Procedure Name: IGG INDEX SYNTHESIS, CSF
Beaker Display Name: IgG Index Synthesis CSF
BEAKER TEST NAME: IGG INDEX, SERUM
BEAKER TEST REPORT NAME: IgG Index, Serum

Beaker Synonyms

IGG INDEX, SERUM

Beaker Location, Container and Temperature

SHBW LABORATORY REGIONAL – BW CHEMISTRY
GOLD TOP SST TUBE R (Preferred) – Refrigerated

SHBW LABORATORY REGIONAL – BW CHEMISTRY
CSF TUBE R (Preferred) – Refrigerated