Question

which of the following abbreviations is a test to assist in the diagnosis of autoimmune diseases?
a rbc
b ana
c pa
d hgb

Explanation:

RBC stands for red - blood cell, PA can refer to various things like pulmonary artery, and HGB is hemoglobin. ANA stands for antinuclear antibody and is used to screen for autoimmune diseases.

Answer:

B. ANA