question: A 23-year old woman has experienced episodes of myalgias, pleural effusion, pericarditis and ahralgias without joint deformity over course of several years. The best laboratory screening test to diagnose her disease would be -
opa: CD, lymphocyte count
opb: Erythrocyte sedimentation rate
opc: Antinuclear antibody
opd: Assay for thyroid hormones