ds-DNA (Double stranded) - Antibody by ELISA, Serum

ds-DNA (Double Stranded) – Antibody by ELISA, Serum

Test Name: ds-DNA (Double Stranded) Antibody by ELISA, Serum
Sample Type: Serum
Method: Enzyme-Linked Immunosorbent Assay (ELISA)

About the Test

The ds-DNA antibody test detects antibodies directed against double-stranded DNA (anti-dsDNA) in the blood. These are autoantibodies produced by the immune system that can be associated with autoimmune disorders.

Clinical Significance

Anti-dsDNA antibodies are particularly associated with Systemic Lupus Erythematosus (SLE). The test can support:

• Evaluation of suspected SLE
• Supporting an established diagnosis of SLE
• Assessment of disease activity in appropriate clinical settings
• Monitoring patients when interpreted along with other clinical and laboratory findings

When Is the Test Recommended?

A doctor may recommend this test when symptoms or other laboratory findings suggest an autoimmune connective-tissue disorder, such as:

• Unexplained joint pain or swelling
• Persistent fatigue
• Skin rashes or photosensitivity
• Unexplained fever
• Abnormal ANA results
• Other features suggestive of SLE

Result Interpretation

Positive: May support the diagnosis of SLE, particularly when clinical findings and other investigations are consistent. Higher levels may sometimes correlate with disease activity, especially renal involvement.

Negative: Makes SLE less likely but does not completely exclude it, as anti-dsDNA antibodies may not be present in every patient.

Important: Results should be interpreted together with ANA, complement levels, urinalysis, kidney function tests, and clinical findings. A positive result alone does not establish a diagnosis.

Patient Preparation

Usually no special preparation or fasting is required. A serum blood sample is collected.

Disclaimer: This test is intended for clinical evaluation and should be interpreted by a qualified healthcare professional in conjunction with the patient's symptoms and other investigations.