Cross-sectional examination of metabolites and metabolic phenotypes in uremia.

The correlations for glucose, as measured by the mass spectrometer, provide an anchor for interpreting this data – LC-MS glucose had a strong positive correlation with glucose measured by the clinical laboratory ( r = 0.80, P <10 −15 ), and a modest negative correlation with serum sodium ( r = −0.21, P = 7.0 × 10 −3 ) that did not reach statistical significance, but is well recognized in the clinic ( i.e. dilutional hyponatremia due to hyperglycemia).

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