Anti-nuclear antibodies (ANA) – screen

Department

Immunology

Delphic Registration Code

ANA

Synonyms

ANA - screen
ANF
Antinuclear Factor
SLE screen

Turnaround Time

14 days

Test Code

6817

Specimen Type

• Serum

Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Acceptable

• SST II (Gold Cap)

Preferred Sample Volume (ml)

5

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Acceptable

• SST II (Gold Cap)

Preferred Sample Volume (ml)

0.5

Aliquot Instructions

Sample Type

• Serum

Minimum Volume (ml)

0.1

Transport to Lab

Ambient (8 - 24 degrees Celsius)

Additional Referral/Aliquot Information

100 uL serum - minimum, 1 mL serum - required. Store in fridge

Reference Intervals

Systemic autoimmune disease is usually associated with titres greater than 1 in 80.

Test Method

Indirect Immunofluorescence
ANAs are screened at 1 in 80 dilution on Hep2000 cells.

Non-Funded Test Cost

$15.73 (Exclusive of GST)

Billing Code

6817

Additional Costing Information

Anti-nuclear Antibodies - screen
Negative ANA usually rules out (99% sensitive using the 1982 ACR Classification Criteria) a diagnosis of SLE although anti Ro positive SLE patients may be negative. See comments on result reports regarding ANA patterns.
All positive ANA screens will be titred. ANA testing may be added to requests for myositis antibodies, ENA & scleroderma antibody requests to confirm line blot or CIEP results if this has not been performed at CHL.

Contact Information

Enquiry Form