Enzyme-linked immunosorbent assay (ELISA)
SAE Ab
Small ubiquitin-like modifier activating enzyme
Serum
Collection Container/Tube: 5 mL Red
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Acceptable: SST
Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube is acceptable. Spin down and send 1 mL of serum refrigerated in a plastic vial.
0.5 mL (volume does NOT allow for repeat testing)
Gross hemolysis: | Reject |
Thawing: | Warm OK; Cold OK |
Gross lipemia: | Reject |
Gross icterus | Reject |
Other: | Anything other than serum; bacterial contamination |
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 14 days | |
Frozen | 60 days | ||
Ambient | 7 days |
Anti-SAE 1 IgG autoantibody can be used to assist in the diagnoses and characterization of a subset of dermatomyositis (DM). It is highly specific for DM (>95%) and is present in 5-8% of the European DM population.
Initial disease onset may consist of mild myopathic features with severe skin involvement; however, extensive myalgia and muscle disease with weakness can appear as the disease progresses. It is associated with dysphagia and systemic symptoms (i.e. fevers, weight loss, increased inflammatory markers). In one cohort, an association with ILD and cancer had been found.
Reference Range: <20
Interpretation:
Negative: <20 units
Weak Positive: 20-39 units
Moderate Positive: 40-80 units
Strong Positive: >80 units
Monday through Friday
This test was developed and its characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
83516
Test Id | Test Order Name | Order LOINC Value |
---|---|---|
FAS1A | Anti-SAE1 Ab, IgG | 101220-2 |
Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
---|---|---|
FAS1A | Anti-SAE1 Ab, IgG | 101220-2 |