CEREBROSPINAL FLUID IGG INDEX

Nephelometry

Reporting Title:

Cerebrospinal Fl, CSF, IgG Index

 

Test Performed At:

 

 

Mayo Medical Laboratories    #8009

 

Specimen Required:

 

BOTH SERUM AND SPINAL FLUID ARE REQUIRED FOR THIS TEST.  SPECIMENS MUST BE OBTAINED WITHIN 1 WEEK OF EACH OTHER.

 

 

 

 

Serum

 

 

Collect 3.0 mL (minimum 1.0 mL) of whole blood in a plain, red-top or serum tube(s).

 

 

 

 

Spinal Fluid

 

 

Send 1.0 mL (minimum 0.5 mL) of spinal fluid in a 7.0-mL screw-capped, sterile, plastic vial. Maintain sterility and forward promptly.

 

Laboratory Notes:

 

 

Serum:

Spin, separate and send 1.0 mL (minimum 0.5 mL) of serum refrigerated.

 

 

CSF:

Send 1.0 mL (minimum 0.5 mL) of spinal fluid refrigerated in a plastic vial.

 

 

NOTE:

1.

Label specimens appropriately (serum or spinal fluid).

 

Reference Values:

 

 

CSF Index:

<0.85

 

 

CSF IgG:

<8.1 mg/dL

 

 

CSF Albumin:

<27.0 mg/dL

 

 

Serum IgG:

600-1,500 mg/dL

 

 

Serum Albumin:

3,200-4,800 md/dL

 

 

CSF/IgG/Albumin:

<0.21

 

 

Serum IgG/Albumin:

<0.4

 

 

CSF IgG Synthesis Rate:

<12 mg/24 h

 

Day(s) Test Set Up:

 

 

Monday – Saturday; 2:00 p.m.

 

Turn Around Time:

 

 

3-4 days

 

Cut-Off Time:

 

 

 

 

CPT Code:

 

 

82040 - Albumin, serum

 

 

82042 - Albumin, spinal fluid

 

 

82784 x 2 – IgG, serum & spinal fluid

 

Care Manager Order Name:

 

 

IgG Index, CSF/Serum

 

KIDDOS Order Name:

 

 

IgG Index CSF/Serum

 

Cerner Order Name:

 

 

IgG Index CSF/Ser

 

Last Updated 08/08