Fatigue and stress studies : an improved semi-automated procedure for flurometric determination of plasma catecholamines.
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1966-04-01
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Abstract:A semiautomated technique is described for the estimation of total catecholamines in plasma by the trihydroxyindole procedure. The method utilizes conventional alumina-column chromatography for isolation of the amines. Catecholamine oxidation, tautomerization, and fluorescence detection are accomplished by an automated chemical system.
Recoveries from plasma of 0.01 and 0.02 micrograms total catecholamines/10-ml sample were 86.4% plus or minus 8.9% (SD) and 85.6% plus or minus 5.8% (SD), respectively. Total catecholamine level in resting human plasma, determined by the present technique, was 0.89 plus or minus 0.15 (SD) micrograms/l.
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