Question: what tests are used to diagnose lupus?
Answer: Complete blood count. This test measures the number of red blood cells, white blood cells and platelets as well as the amount of hemoglobin, a protein in red blood cells. ... 
Erythrocyte sedimentation rate. ... 
Kidney and liver assessment. ... 
Urinalysis. ... 
Antinuclear antibody (ANA) test.