This test is only performed if the antinuclear antibody (ANA) screen is positive. The ENA screen includes antibodies to RNP, Sm, SS-A, SS-B, Scl-70 and Jo-1. If the ENA screen is positive then individual specificities will be checked and subsequently confirmed by immunoblot assay. Jo-1 antibodies are detected in patients with myositis, especially in combination with pulmonary fibrosis.
Suspected autoimmune-mediated connective tissue disorders Suspected myositis
|Sample & container required||RST (rust top)|
|Sample volume||5-10 mL (1 mL serum)|
|Turnaround time||14 days|
This test is currently unaccredited due to a recent change in platform/assay.