In an anti-nuclear antibody indirect immunofluorescence test, a sample of patient serum shows a positive, speckled pattern. Which would be the most appropriate additional test to perform?

In an anti-nuclear antibody indirect immunofluorescence test, a sample of patient serum shows a positive, speckled pattern. Which would be the most appropriate additional test to perform?









a. antimitochondrial antibody
b. immunoglobulin quantitation
c. screen for Sm and RNP antibodies
d. anti-DNA antibody using












Answer: C


Immunology

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