Merck
  • Home
  • Search Results
  • Age-related reference values for urinary organic acids in a healthy Turkish pediatric population.

Age-related reference values for urinary organic acids in a healthy Turkish pediatric population.

Clinical chemistry (1994-06-01)
F Guneral, C Bachmann
ABSTRACT

Organic acid concentrations were quantified by gas chromatography and the individual acids identified by mass spectrometry in urine specimens from a healthy Turkish pediatric population of ages 2 days to 16 years, subdivided into five age groups. We quantified 69 organic acids (32 major and 37 minor components) and report here the median values and percentiles for each compound, adjusted for creatinine content, for the five groups. Concentrations of most of the organic acids tend to decrease with age but display substantial differences between age groups. This emphasizes the importance of comparing patients' data with age-matched reference data. Correlations between the excretion of organic acids and protein or caloric intake were significant for several compounds.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Liquified Phenol, ≥89.0%
Sigma-Aldrich
Homovanillic acid, Fluorimetric reagent
Sigma-Aldrich
Maleic acid, ReagentPlus®, ≥99% (HPLC)
Sigma-Aldrich
Phthalic acid, ACS reagent, ≥99.5%
Sigma-Aldrich
Terephthalic acid, 98%
Sigma-Aldrich
L-(+)-Lactic acid solution, in H2O, ≥85%
Sigma-Aldrich
α-Hydroxyisobutyric acid, 99%
Sigma-Aldrich
p-Cresol, ≥99%, FG
Sigma-Aldrich
4-Hydroxyphenylacetic acid, 98%
Sigma-Aldrich
N-Acetyl-L-aspartic acid, ≥99.0% (T)
Sigma-Aldrich
Palmitic acid, ≥95%, FCC, FG
Sigma-Aldrich
Glycolic acid solution, technical grade, 70 wt. % in H2O
Sigma-Aldrich
3-Methylglutaric acid, 99%
Sigma-Aldrich
Glycolic acid, ReagentPlus®, 99%
Sigma-Aldrich
Phthalic acid, reagent grade, 98%
Sigma-Aldrich
Glycolic acid solution, high purity, 70 wt. % in H2O
Sigma-Aldrich
2-Furoic acid, 98%
Sigma-Aldrich
Methylsuccinic acid, 99%
Sigma-Aldrich
α-Hydroxyisobutyric acid, 98%
Sigma-Aldrich
Glutaric acid, 99%
Sigma-Aldrich
3-Hydroxybutyric acid, 95%
Sigma-Aldrich
Pimelic acid, 98%
Supelco
Maleic acid, Standard for quantitative NMR, TraceCERT®
Supelco
4-Methylphenol solution, certified reference material, 5000 μg/mL in methanol
Sigma-Aldrich
L-(+)-Lactic acid solution, ~40% in H2O
Sigma-Aldrich
L-Pyroglutamic acid, ≥99.0% (T)
Supelco
Palmitic acid, analytical standard
Sigma-Aldrich
α-Ketoglutaric acid, 99.0-101.0% (T)
Sigma-Aldrich
Phthalic acid, puriss. p.a., ≥99.5% (T)
Sigma-Aldrich
α-Ketoglutaric acid, BioReagent, suitable for cell culture, suitable for insect cell culture