ANTI DS-DNA ANTIBODY - IFA WITH REFLEX TITERS

The Anti-dsDNA (Double-Stranded DNA) Antibody Test by Indirect Immunofluorescence Assay (IFA) with Reflex Titers is a specialized blood test used to detect antibodies directed against double-stranded DNA (dsDNA). These autoantibodies are highly associated with Systemic Lupus Erythematosus (SLE), a chronic autoimmune disease that can affect the skin, joints, kidneys, brain, heart, lungs, and other organs.

This test utilizes the Indirect Immunofluorescence Assay (IFA) method for accurate antibody detection. If Anti-dsDNA antibodies are identified, reflex titers are automatically performed to measure the concentration of antibodies. Antibody titers help physicians assess disease activity, monitor treatment response, and evaluate the risk of lupus-related complications, particularly lupus nephritis.

Benefits of the Test

• Highly specific for diagnosing Systemic Lupus Erythematosus (SLE).
• Detects Anti-dsDNA antibodies using the IFA method.
• Automatically performs reflex antibody titers when positive.
• Helps monitor lupus disease activity.
• Supports early detection of lupus nephritis.
• Assists physicians in treatment planning and follow-up.

Why Doctors Recommend This Test

Doctors may recommend the Anti-dsDNA Antibody Test by IFA with Reflex Titers for patients with symptoms or laboratory findings suggestive of lupus, including:

• Persistent joint pain and swelling
• Butterfly-shaped facial rash (malar rash)
• Photosensitivity (sensitivity to sunlight)
• Unexplained fever
• Chronic fatigue
• Mouth or nasal ulcers
• Hair loss
• Blood in urine or proteinuria
• Kidney inflammation (lupus nephritis)
• Positive ANA (Antinuclear Antibody) test

This test is commonly performed together with ANA Profile, Complement (C3 & C4), ENA Panel, ESR, CRP, and other autoimmune investigations.

Preparation Before Test

• No fasting is required.
• Continue routine medications unless instructed otherwise by your physician.
• Inform your healthcare provider about your medical history and current medications.
• A blood sample is collected for laboratory analysis.

Normal Reporting Time

Reporting Time: Usually 3–7 working days, depending on laboratory processing protocols.

Who Should Take This Test?

This test is recommended for:

• Patients with suspected Systemic Lupus Erythematosus (SLE).
• Individuals with a positive ANA test requiring confirmation.
• Patients with symptoms of autoimmune connective tissue disorders.
• Individuals with suspected lupus nephritis.
• Patients requiring monitoring of lupus disease activity.
• Individuals referred by rheumatologists or nephrologists.

Patient-Friendly Summary

The Anti-dsDNA Antibody Test by IFA with Reflex Titers is a blood test that helps diagnose and monitor Systemic Lupus Erythematosus (SLE), commonly known as lupus. In lupus, the immune system mistakenly attacks the body's own tissues, producing antibodies against double-stranded DNA. These antibodies are strongly associated with lupus and often increase when the disease becomes more active, especially when the kidneys are affected. If the initial test is positive, the laboratory automatically performs reflex titers to measure antibody levels, providing additional information about disease severity. This safe and reliable blood test requires no fasting and helps physicians diagnose lupus, monitor treatment, and assess disease progression.