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Pathology Departments Requesting & Reporting Blood Test Information Phlebotomy Guide Contact us
Blood Sciences

Blood Test Information

ENA Screen
(a.k.a Saline extractable nuclear antigens)
minimum sample volume required ~ 5ml

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Tube type: SST

Special instructions
Time limit for add on = 2 days

Interfering substances = none known

Repeat testing not normally recommended.

Samples positive for screening ELISA will reflex to ENA typing for exact specificity.

Reference range

Linked to
ENA typing

Turnaround Time
14 days

Department: Immunology

Clinical Application
Used to help diagnose connective tissue disease. The ENA ELISA used in this department detects antibodies to anti-Ro, anti-La, anti-U1-RNP, anti-Sm, anti-Jo-1 and anti-Scl-70.


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