FIELD: medicine, biochemistry.
SUBSTANCE: at testing one should precipitate high-molecular compounds with acetonitrile and register supernatant's spectral characteristics. Supernatant should be applied onto a paper filter, dried and put into solution containing aromatic aldehyde, acetone and concentrated hydrochloric acid taken at weight ratio of 70:5:1 to be kept for 2-3 min. Then it should be once again dried up to detect qualitative and semiquantitative content of oxidized tryptophan metabolites by intensity and chromatic shades. Moreover, by chromatic shades of yellow dyeing it is possible to detect the content of hydroxylated metabolites and by chromatic shades of violet dyeing - that of unhydroxylated ones.
EFFECT: higher significance of detection.
3 ex
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