[Studies of protein clearance in detecting early renal involvement of lupus erythematosus].

By means of protein clearance investigations the differentiation of the damage degree of the kidneys is to be described in a certain extent also with lupus nephritis. The in 1982 stated proteinuria elimination of 0.5 g/24 hour as a criterion for a renal participation could be the cause for the often relatively late stated kidney participation in the LE. The determination of selective and nonselective excreted proteins in connection with the detection of the double strain-DNS antibodies might be more proper to indicate a kidney participation.