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Test Code: ENA Preferred Name Extractable Nuclear Antigen antibody

No
N/A
Weekly
1 week
Medicare Item
N/A

Test Tubes

ImageSpecimen TypeSpecimen VolumeTube Type
Blood (adult)5 mLSST with gel 8.5 mL (Dark Yellow Top)
Blood (paediatric)2 mLSST with gel 600 uL Paed (Red or Yellow top)

COLLECTION NOTES

--No collection notes--

GENERAL NOTES



The presence of antibodies against extractable nuclear antigen is highly suggestive of systemic rheumatic disease.

Specific Antigens include:
RNP        - Mixed connective Tissue Disease
Sm          - Highly specific for SLE
SSA/Ro  - Subacute cutaneous lupus, Sjogrens synd
SSB/La   - Sjogren syndrome
Scl 70     - Scleroderma
Jo1         - Polymyositis

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