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HelpTest Code ENA Anti-extractable Nuclear Antigen Identification
Laboratory Code
LAB5040
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 5.0 mL / 6.0 mL blood
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 2 days |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 year |
Panel Information
Panel includes the following tests:
- Anti-JO1 IgG
- Anti-LA (SSB) IgG
- Anti-RNP/SM IgG
- Anti-RO (SSA) IgG
- Anti-SCI 70 IgG
- Anti-SM IgG
Methodology
Enzyme Immunoassay
Days and Times Performed
Wednesday, TAT 2 - 8 days
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
No antibodies detected: < 1.0
Weak positive: 1.0 – < 2.0
Positive: 2.0 – < 5.0
Strong positive: ≥ 5.0
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Identifies presence or absence of anti-extractable nuclear antigens
Service Code
32143
LOINC Code Information
Not available
Alias
Anti-ENA (Antibodies to Extractable Nuclear Antigens)
ENAP
Update
Last updated 21/02/2025