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Test Code ENAS Antibody to Extractable Nuclear Antigen Screen 

Performing Laboratory

Munson Medical Center Laboratories

Methodology

Enzyme immunoassay

 

Reflex testing

If screen is positive, antibody to extractable nuclear antigen evaluation performed at Mayo Medical Laboratories for specific SS-A/Ro, SS-B-La, Sm, RNP, Scl 70, and Jo1 antibodies at additional charge.

Specimen Requirements

Specimen must arrive within 48 hours of draw.

 

Container/Tube: Gold-top serum gel tube, one full tube

Specimen Volume:  1 mL serum

Transport Temperature: Refrigerate

Collection Instructions:  Centrifuge within 2 hours of draw, then refrigerate.

Reference Values

   <20 U (negative)

20-29 U (weak positive)

40-80 U (moderate positive)

   >80 U (srong positive)

 

Days Test(s) Set Up

Mon-Fri: Batched 1-2 times/week

Test Classification and CPT Coding

86235 x 6