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Problems of Nutrition
Article . 1993
Data sources: Europe PubMed Central
Claim

[A comparison of methods of determining 4-pyridoxic acid in urine].

descriptionPublicationkeyboard_double_arrow_right Article 08 Jan 1993 Russian Journal:Voprosy pitaniia (issn: 0042-8833, Copyright policy )
Authors: N A, Beketova; O A, Vrzhesinskaia; V M, Kodentsova; T G, Zaburkina; E D, Bender; L M, Iakushina;

pmid: 1462525

[A comparison of methods of determining 4-pyridoxic acid in urine].

Abstract

Routine fluorescent assays for urine 4-pyridoxic acid (4-PA) in variants of lactone 4-PA external standard (variant 1) and internal 4-PA standard (variant 2) were compared to high performance liquid chromatography. Correlation between the two values were defined by specially derived equation. The internal standard is preferable, as variant 1 presents underestimated results. Variant 2 is limited to high 4-PA concentrations, being unfit in low ones for overestimating the data. The chromatography proved most reliable and specific.

Keywords

Adult, Spectrometry, Fluorescence, Humans, Female, Middle Aged, Chromatography, High Pressure Liquid, Pyridoxic Acid

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Average
gold