Autoimmune serology
Anti-dsDNA
Highly specific for SLE; titers track lupus nephritis activity.
Sample
Serum
Clinical reference range
— to 30 IU/mL
Negative (assay-specific)
Conv: —–30 IU/mL
Biology
What it measures
IgG against double-stranded DNA. Implicated in immune-complex glomerulonephritis.
Clinical use
Why we order it
SLE diagnosis (EULAR/ACR weighted criteria) and monitoring of lupus nephritis.
Related