Test Code ENAE Antibody to Extractable Nuclear Antigen Evaluation, Serum

Reporting Name

Ab to Extractable Nuclear Ag Eval,S

Useful For

Evaluating patients with signs and symptoms of a connective tissue disease in whom the test for antinuclear antibodies is positive

Testing is not useful in patients without demonstrable antinuclear antibodies.

Profile Information

Test ID	Reporting Name	Available Separately	Always Performed
SSA	SS-A/Ro Ab, IgG, S	Yes	Yes
SSB	SS-B/La Ab, IgG, S	Yes	Yes
SM	Sm Ab, IgG, S	Yes	Yes
RNP	RNP Ab, IgG, S	Yes	Yes
SCL70	Scl 70 Ab, IgG, S	Yes	Yes
JO1	Jo 1 Ab, IgG, S	Yes	Yes

Testing Algorithm

For more information see Connective Tissue Disease Cascade.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum

Specimen Required

Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 0.5 mL

Specimen Minimum Volume

0.35 mL

Specimen Stability Information

Specimen Type	Temperature	Time	Special Container
Serum	Refrigerated (preferred)	21 days
	Frozen	21 days

Reference Values

SS-A/Ro ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

SS-B/La ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

Sm ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

RNP ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

Scl 70 ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

Jo 1 ANTIBODIES, IgG

<1.0 U (negative)

≥1.0 U (positive)

Reference values apply to all ages.

Day(s) Performed

Monday through Saturday

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86235 x 6

Special Instructions

Connective Tissue Disease Cascade

LOINC Code Information

Test ID	Test Order Name	Order LOINC Value
ENAE	Ab to Extractable Nuclear Ag Eval,S	90228-8

Result ID	Test Result Name	Result LOINC Value
JO1	Jo 1 Ab, IgG, S	33571-1
RNP	RNP Ab, IgG, S	29958-6
SCL70	Scl 70 Ab, IgG, S	47322-3
SM	Sm Ab, IgG, S	18323-6
SSA	SS-A/Ro Ab, IgG, S	33610-7
SSB	SS-B/La Ab, IgG, S	33613-1

Report Available

Same day/1 to 2 days

Method Name

Multiplex Flow Immunoassay

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.