Article Text
Articles
Simplification of urinary aldosterone measurement by radioimmunoassay
Abstract
An anti-aldosterone serum has been used to measure urinary aldosterone concentration. A single stage of paper chromatography provides an extract of sufficient purity. Further purification by additional chromatography in a different solvent system only improves the purity by 3% ± 8 (SD). Blanks are negligible and recovery of added aldosterone is 104% ± 10 (SD).
A simplified rapid screening assay capable of revealing gross deviations from the normal is also suggested.
The diagnostic value of the assay is indicated.
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Footnotes
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↵1 Correspondence to: Dr C. L. Cope, Department of Medicine, Royal Postgraduate Medical School, Ducane Road, London W12 0HS.