Test Description

dsDNA antibodies are IgG autoantibodies against the double stranded DNA present in serum, as an aid to the diagnosis of SLE, as these antibodies are very specific markers for SLE. They are also found in patients with autoimmune conditions such as mixed connective tissue disease, rheumatoid arthritis, scleroderma and Sjögren’s syndrome.

When should this test be ordered?
This test is ordered for a variety of connective tissue disorders and in patients with a positive ANA result who are suspected to have systemic lupus erythematosus (SLE).
High Risk · >= 76 (IU/mL)
dsDNA: Supports the diagnosis of systemic lupus erythematosus (SLE). Treat based on symptoms. Consider anti-inflammatory medications for joint pain and stiffness; steroid creams for rashes; corticosteroids of varying doses to minimize the immune response; and antimalarial drugs for skin and joint problems.
Borderline Risk · 30-75 (IU/mL)
For values that fall within the weak positive range, it is recommended to repeat testing in one month to confirm the patient’s autoimmune status.
Low Risk · <= 29 (IU/mL)
Within Reference Range.
Testing Method Used
ELISA.

Please ship samples daily.
Improvements and Prevention
Physicians may select and prescribe medications specific to your diagnosis.
Symptoms can be alleviated by maintaining a healthy weight, physical therapy or strength enhancing exercises, reduce fatigue by getting adequate rest and sleep, and consuming an anti-inflammatory diet.
Specimen Type
Serum
Fasting Required
No, but may be done with other tests that requires fasting.
Drawing and Processing
  1. Draw from a vein into a SST tubetube1
  2. Invert tube (do not shake) 1-2 times to mix adequately
  3. Let stand upright in tube rack for 30 minutes
  4. Centrifuge for 15 minutes at 3300rpm
  5. Do not leave at room temperature for more than 1 hour
  6. Keep cold in a refrigerator to maintain stability, until ready to ship
Shipping Instructions
  1. Freeze ice packs 24 hours prior to use
  2. Place ice packs inside the Styrofoam insulated kit
  3. Place processed tubes inside biohazard bag, place inside kit
  4. Seal box, print airbill and adhere to box and wait for courier to pick up
Rejection Criteria
QNS; temperature out of range upon receipt; grossly lipemic or hemolyzed; wrong specimen type; sample stability exceeded for this analyte; unlabeled or mislabeled specimen.
References

1. Kavanaugh A, Tomar R, Reveille J, Solomon DH, Homburger HA (January 2000). “Guidelines for clinical use of the antinuclear antibody test and tests for specific autoantibodies to nuclear antigens. American College of Pathologists”.

2. Rekvig OP, Nossent JC (February 2003). “Anti-double-stranded DNA antibodies, nucleosomes, and systemic lupus erythematosus: a time for new paradigms?”

The information provided here is intended for educational purposes only and should not be used or substituted as medical advice. You should consult a healthcare practitioner regarding medical diagnosis or treatment.