Screening and Confirmation Tests for Antinuclear Antibodies Are Typically Performed

Screening and confirmation tests for antinuclear antibodies are typically performed by:

A) immunodiffusion followed by indirect immunofluorescence.
B) indirect immunofluorescence followed by enzyme immunoassay.
C) direct immunofluorescence followed by serum protein electrophoresis.
D) immunofixation electrophoresis followed by direct immunofluorescence.