[Radioimmunological determination of aldosterone in the serum. New method for the localization of aldosteronism].

It is described a radioimmunologic method for the determination of aldosterone in the plasma and the urine. The method possesses a high specifity, so that a chromatographic prepurification can be given up. The achieved sensitivity allows an analysis in 0.2 ml plasma. This radioimmunoassay can be used for the determination of the aldosterone concentration in the blood after side-separated taking from the adrenal veins by means of the catheter technique. With this a localisation diagnostics of the aldosteronoma is possible.