SFIN - Specimen: Cerebrospinal Fluid (CSF) IgG Index

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Test ID: SFIN    
Cerebrospinal Fluid (CSF) IgG Index

Specimen Type Describes the specimen type needed for testing


Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Serum and spinal fluid are required. Specimens must be obtained within 1 week of each other.


Specimen Type: Serum

Container/Tube: Red top or serum gel

Specimen Volume: 1 mL

Collection Instructions: Label specimen as serum.


Specimen Type: Spinal fluid

Container/Tube: Sterile vial

Specimen Volume: 1 mL

Collection Instructions: Label specimen as spinal fluid.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

Serum: 0.5 mL
Spinal Fluid: 0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected



Serum: Mild OK; Gross OK



Serum: Mild OK; Gross reject



Serum: Mild OK; Gross OK



Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
CSFRefrigerated (preferred)14 days
 Ambient 14 days
 Frozen 14 days
SerumRefrigerated (preferred)14 days
 Ambient 14 days
 Frozen 14 days