A gamma-globulin factor in the serum of patients with systemic lupus erythematosus that reacts with isolated cell nuclei 1 or nucleoprotein 2,3 has been detected in many ways. 4 The standard method of ...

Citrate blood was taken from 18 healthy volunteers by brachial vein puncture and anti-adenoviral antibody titers were determined by ELISA, complement fixation test (CBR) and neutralizing assay.

A complement blood test checks for autoimmune diseases or other issues with your immune system. Your doctor might test you if you have a family history of certain conditions, such as rheumatoid ...