Test Name
EXTRACTABLE NUCLEAR ANTIGEN (ENA) PANEL, IMMUNOBLOT
Aliases
ANTI-ENA
Abbreviations
ENA
Test Classification
GROUPED TEST
Department
SEROLOGY
Sub Department
AUTOIMMUNITY
TAT Category
ELAPSED (CONTINUOUS) TIME
Estimated TAT
168
TAT Units
HOURS
Test Requirements
Serum in plain tube (red top) or SST tube (yellow top) or in a separation vial. Centrifuge tubes within 1 hour. Separate centrifuged serum in plain tubes within 1 hour.
Test components: ANTI-SS-A (RO) , ANTI-SS-A (RO), 52 kDaANTI-SS-B (LA), ANTI-SCL-70, ANTI-SM, ANTI-RNP/SmANTI-JO-1, PCNA ANTIBODYNUCLEOSOMES ANTIBODY, HISTONES ANTIBODY, RIBOSOMAL-P-PROTEIN ANTIBODY, DS-DNA ANTIBODY, DFS70 ANTIBODY, KU ANTIBODY, NCENTROMERE ANTIBODY, PM-SCL ANTIBODY, AMA M2 ANTIBODY, MI-2 ANTIBODY.
Clinical Utility
Diagnose systemic autoimmune rheumatic diseases e.g. SLE, mixed connective tissue disease (MCTD), scleroderma, Sjögren's syndrome, polymyositis etc. Can be done as a follow-up test for a positive ANA result.
Last Review
26th Feb 2026