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During the past few years technological advance have been allowed the developing of techniques that help to the diagnosis of multiple diseases. In the case of the autoimmune diseases, immunological techniques are helpful since they allow the detection of multiple autoantibodies at the same time with small volumes of sample. Together with the development of the new techniques, sensitivity and specificity in the detection of the antibodies specificities' also have been increased, in such a way that the clinicians can count with tests that allow them to make early diagnoses with greater certainty and also to follow the course of the disease based on the variation of the antibodies presents in the patient's samples. It is important to emphasize that the new techniques of laboratory that are used for the support of the diagnosis of autoimmune diseases, no longer are exclusive for research laboratories but by their facility of standardization, quality control and reproducibility they can be used in clinical laboratory of medium and small sizes. In the present paper we describe those techniques with greater application in the clinical laboratory of autoimmune diseases. [ABSTRACT FROM AUTHOR]