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Catalog ID Sm Ab Sm / Smith Antibodies

CPT Code

86235

Specimen

1.2 mL of whole blood in gold top tube. Red top tube is acceptable.

Rejection Criteria

Incorrect tube, insufficient specimen, unlabeled specimen

Interpretative Information

This assay reacts to both SmBB' and SmD antibodies. A definitive clinical diagnosis should not be based on the results of a single diagnostic method, but should only be made by the physician after all clinical and laboratory findings have been evaluated. This assay has a specificity of 94.9% and a sensitivity of 91.8%.

Performing Lab

Immunology Laboratory, Core Lab - AD3301, x1-3378

Turn-Around-Time

1-3 business days

Reference Values

< 7.0 U/mL = Negative

7.0 - 10.0 U/mL = Equivocal, should be repeated in 8-12 weeks

>10.0 U/mL = Positive