ARUP's Laboratory Test Directory

0050652: Extractable Nuclear Antigen Antibodies (RNP, Smith, SSA, & SSB)

Test Mnemonic: ENA ABS4
Methodology: Multi-Analyte Fluorescent Detection

Performed: Sun-Sat

Reported: 1-2 days

Specimen Required:  
Collect: One 4 mL SST. 

Transport: 1 mL serum at 2-8°C.  (Min: 0.5 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.3 mL serum at 2-8°C.

Remarks: Separate serum from cells ASAP.

Unacceptable Conditions: Plasma and other body fluids.  Severely lipemic or bacterially contaminated specimens. 

Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval:
 
Test Number Components Reference Interval
0050470RNP (U1) (Ribonucleic Protein) (ENA) Antibody, IgG 29 AU/mL or less: Negative
30-40 AU/mL: Equivocal
41 AU/mL or greater: Positive
0050085Smith (ENA) Antibody, IgG 29 AU/mL or less: Negative
30-40 AU/mL: Equivocal
41 AU/mL or greater: Positive
0050691SSA (Ro) (ENA) Antibody, IgG 29 AU/mL or less: Negative
30-40 AU/mL: Equivocal
41 AU/mL or greater: Positive
0050692SSB (La) (ENA) Antibody, IgG 29 AU/mL or less: Negative
30-40 AU/mL: Equivocal
41 AU/mL or greater: Positive
 

CPT Code(s):
86235 SSA; 86235 SSB; 86235 RNP; 86235 Smith