| (Immunology) |
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| Investigation | : | Anti-DNA (double-stranded-dsDNA) Ab | ||||||||||
| Specimen type | : | Serum | ||||||||||
| Spec container | : | Serum Gel | ||||||||||
| Volume required | : | 5ml | ||||||||||
| Reference range | : | screen: negative or <7 (quantitation) IU/ml | ||||||||||
| Turnaround | : | <7 days (screen), <14 days (quantitation) | ||||||||||
An initial screen (method: enzyme immunoassay) is undertaken and if positive a quantitative measurement is done (method: radioimmunoassay - Farr assay).
N.B. Requests for autoantibodies should be selective and relevant to the clinical circumstances. There is rarely any merit in requesting a particular autoantibody if there is no clinical evidence of the disease(s) with which it is associated .
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