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26327 Smith Antibodies

Smith Antibodies
Test Code: SM
Synonyms/Keywords

​SM, ENA, Extractable Nuclear Antibodies, Smith Antibody

Test Components

​Sm (Smith) Antibodies

Useful For

​Sm or Smith Antibody is considered a marker for SLE. It occurs in a minority of SLE patients with a low sensitivity, but is very specific for SLE but without anti-dsDNA antibody.

Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​No​Serum​Red Top Tube (RTT) or Serum Separator Tube (SST)​​1.0 mL​0.5 mL​0.5 mL
Specimen Stability Information
Specimen TypeTemperatureTime
​Serum ​​Refrigerated​7 days
​Frozen​>7 days
Rejection Criteria
​Gross Lipemia
​Gross Hemolysis
​Heat inactivated samples

 

Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
​Marshfield​Monday through Friday​1 day​Multiplex Flow Immunassay / Bio-Rad BioPlex 2200
Reference Range Information
Performing LocationReference Range
​Marshfield

​Negative <1.0 AI

Analytical measuring range is 0.2-8.0 AI (Antibody Index)

Interpretation

​Positive results supports diagnosis of SLE with renal involvement.

Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
​86235​​1​Antibody to extractable nuclear antigen​
Synonyms/Keywords

​SM, ENA, Extractable Nuclear Antibodies, Smith Antibody

Test Components

​Sm (Smith) Antibodies

Ordering Applications
Ordering ApplicationDescription
​Cerner​Smith Antibodies
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
​No​Serum​Red Top Tube (RTT) or Serum Separator Tube (SST)​​1.0 mL​0.5 mL​0.5 mL
Specimen Stability Information
Specimen TypeTemperatureTime
​Serum ​​Refrigerated​7 days
​Frozen​>7 days
Rejection Criteria
​Gross Lipemia
​Gross Hemolysis
​Heat inactivated samples

 

Useful For

​Sm or Smith Antibody is considered a marker for SLE. It occurs in a minority of SLE patients with a low sensitivity, but is very specific for SLE but without anti-dsDNA antibody.

Test Components

​Sm (Smith) Antibodies

Reference Range Information
Performing LocationReference Range
​Marshfield

​Negative <1.0 AI

Analytical measuring range is 0.2-8.0 AI (Antibody Index)

Interpretation

​Positive results supports diagnosis of SLE with renal involvement.

For more information visit:
Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
​Marshfield​Monday through Friday​1 day​Multiplex Flow Immunassay / Bio-Rad BioPlex 2200
For billing questions, see Contacts
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments
​86235​​1​Antibody to extractable nuclear antigen​
For most current information refer to the Marshfield Laboratory online reference manual.