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A B C D E F G H I J K L M N O P Q

Test Identifier Information

 
Registration CodeENA
Method

Counter Current Immunoelectrophoresis

External Price$37.18(Exclusive of GST)
  

Specimen Collection

 
Pre-Testing Requirements

None

Specimen Collection Protocols

Clotted BLood(Red), EDTA(Lavender), Heparin(Green)

Patient Specimen5 mL clotted blood (EDTA and Heparin may be used)
Paediatric Specimen1 mL clotted blood
Sample Delivery to LabRoom temperature
  

Instructions for Referral to CHLabs

 
Aliquot Instructions200 uL serum - minimum 1 mL serum - preferred Store in fridge
Aliquot Transport to CHLRoom temperature
  

CHLabs Laboratory

 
DepartmentBiochemistry - Immunology
Contact Details Email Email
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Contact Phone Number(03) 364 0414 | x80414
Test AvailabilityBatched at least weekly
Turnaround Time1 week
Reference Interval

- Not detected
- Positive with identification to follow. See Additional Information.

Interpretation

Extractable Nuclear Antigen antibodies - screen
These antibodies have high specificity, but relatively low sensitivity for various connective diseases:
Ro/SSA: 60-70% Sjögren's Syndrome, 30-40% SLE 
SSB/La: 50-60% Sjögren's Syndrome, 10-15% SLE 
RNP: 95-100% MCTD 
Sm: 30-40% SLE 
Jo-1: 30% Polymyositis 
rP: 45-90% Severe depression or psychosis due to SLE, 12-20% non psychotic SLE

Additional Information

Counter current immunoelectrophoresis is used to detect antibodies against the following antigens: Ro/SSA, La/SSB, RNP, Sm, Jo-1, ribosomal P, PCNA, Ku, Scl-70, PM-Scl, Mi-2.

All positive samples will be further tested to identify antigen specificity.

If not already requested, samples testing positive by ENA may be reflex tested for ANA to confirm band identity.

Delphic Number Test Number6883

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