How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask A. Schuyler, NP Your Own Question
A. Schuyler, NP
A. Schuyler, NP, Nurse Practitioner
Category: Health
Satisfied Customers: 15941
Experience:  Board Certified NP, MS, RN. 25 years private practice & hospitalist
Type Your Health Question Here...
A. Schuyler, NP is online now
A new question is answered every 9 seconds

The blood test DNA (DS) ABS is an indicator for lupus if ANA

Customer Question

The blood test DNA (DS) ABS is an indicator for lupus if ANA IFA SCR is positive....if ANA IFA SCR is negative is this still an indicator of a pre-disease condition?
Submitted: 5 years ago.
Category: Health
Expert:  A. Schuyler, NP replied 5 years ago.


Welcome to Just Answer and thanks for your question. The sequence is first ANA. If that is positive, then ANA IFA screen is performed. If that is positive, then ANA IFA with Reflex to Titer/Pattern is performed. It is only with all those positives that the additional antibody tests are performed (dsDNA, Sm/RNP, RNP, Sm, and Chromatin) are tested for. If ANA IFA is negative then dsDNA wouldn't be positive.