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 Dr. David Your Own Question
Dr. David
Dr. David, Doctor (MD)
Category: Oncology
Satisfied Customers: 45619
Experience:  Experienced Oncology Physician trained in New York City. I'm ready to help.
Type Your Oncology Question Here...
Dr. David is online now
A new question is answered every 9 seconds

What is the differential diagnosis following test results? *

Customer Question

What is the differential diagnosis for the following test results?
* Positive ANA
* Negative DNA (DA) antibody
* Negative SM antibody
* Positive SM/RNP antibody
* Negative RNP antibody
* Negative chromatin (nucleosomal) antibody
* Normal SED rate
Submitted: 11 months ago.
Category: Oncology
Expert:  Dr. David replied 11 months ago.

This is Dr. David

A positive result for RNP antibodies is consistent with connective tissue disease.

when dsDNA antibodies and Sm antibodies are not detectable, a positive result for RNP antibodies is consistent with the diagnosis of mixed connective tissue disease

have you talked to you a rheumatology doctor about the possibility to have mixed connective tissue disease?