Extractable Nuclear Antigen Screen (ENA Screen)

by mike_rogers — last modified March 16, 2009 01:48 PM

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514

(SM, RNP, SS-A, SS-B, SCL-70, J0-1
(must be ordered as a screen)

Tube Type

Test ID		ENAN
Test Number		8250
SMS Browse		ENA SCREEN(Extractable Nuc. Ag) Extractable Nuc. Ag. (ENA)
CPT Code(s)		86235 (x 7 if positive)
Group/Individual Test		Group
Laboratory		Immunology
Tube Station		30
Specimen	Routine:	2 mL blood/Serum Separator Tube/Gold Top
	micro:	N/A
Availability	Routine:	1 Run/Week; (Wednesday) See Important Comments
	STAT:	N/A

Turnaround Time		1-8 Days
Reference Range	Normal:	Negative for all test members SM, RNP, SS-A, SS-B, SCL-70, Jo-1 See details below.

Comments	ENA screen consists of a single ELISA for antibodies against the SM, RNP, SS-A, SS-B, SCL-70 and Jo-1 antigens. Specimens positive by screen will be further tested for each individual antibody. One additional day is required for testing of positives. ENA Screen tests are not individually orderable Interpretive Guidelines: ENA Screen: <20 ENA Units: NEGATIVE 20-25 ENA Units: BORDERLINE >25 ENA Units: POSITIVE SM, RNP, SS-A, SS-B, SCL-70, Jo-1 Ab: <20 ENA Units: NEGATIVE 20-30 ENA Units: BORDERLINE >30 ENA Units: POSITIVE Values >100 ENA Units associated with positive Immunodiffusion results.

disclaimer text

Extractable Nuclear Antigen Screen (ENA Screen)