Techniques are described in detail for a radioimmunoassay of plasma adrenocorticotropin (ACTH) that is capable of detecting hormone in unextracted normal human plasma at 1:5 dilution under the conditions described. The sensitivity of the assay is at the level of 1 μμg/ml (equivalent to 0.014 mU/100 ml).
Solomon A. Berson, Rosalyn S. Yalow
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