Porter-Silber chromogens

Por·ter-Sil·ber chro·mo·gens

(pōr'tĕr sil'bĕr),
yellow phenylhydrazones formed by the reaction of 17,21-dihydroxy-20-oxosteroids with a phenylhydrazine-ethanol-sulfuric acid reagent; used chiefly to determine plasma cortisol concentrations and the urinary output of 17-hydroxycorticoids.

Porter,

Curt C., U.S. biochemist, 1914–.
Porter-Silber chromogens - used chiefly to determine plasma cortisol concentrations and the urinary output of 17-hydroxycorticoids.
Porter-Silber chromogens test - a urine test used as a measure of adrenocortical function. Synonym(s): 17-hydroxycorticosteroid test
Porter-Silber reaction - the basis of the 17-hydroxycorticosteroid test.

Silber,

Robert H., U.S. biochemist, 1915–.
Porter-Silber chromogens - see under Porter, Curt C
Porter-Silber chromogens test - see under Porter, Curt C
Porter-Silber reaction - see under Porter, Curt C