Immunoglobulin G, CSF Index


Sunquest Code:IGGSYN  
Epic Code:LAB3569Epic Name:IMMUNOGLOBULIN G CSF INDEX
Order Instructions:Do not order IGGSYN if OLIGO is ordered. IGGSYN is included in OLIGO.
Synonyms:IgG Synthesis Rate/Index
Methodology:Nephelometry
CPT Code:82042, 82784 x4, 82040, 82784
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1 day.


Collection Instructions

Specimen:Blood and CSF
Optimal Volume:2 mL blood; 1 mL CSF
Minimum\Peds Volume:1.0 mL blood and 0.4 mL CSF
Container:Sterile tube, Red or gold (gel) (Red (no gel))
Collection Instructions:Collect blood in red/black (gel) or red (plain, no gel) tube and CSF in sterile container.
Causes for Rejection:Hemolyzed or grossly bloody specimens


Processing and Shipping

Specimen Processing:Separate serum from cells ASAP. Aliquot 1 mL, 0.4 mL minimum of serum. Centrifuge CSF to remove cellular material. Aliquot 1 mL, 0.4 mL minimum. Store both CSF and serum in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:50676 (IGG SYN)


Interpretive

Reference Range:

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

 

 



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