The reproducibility and heritability of individual differences in osmoregulatory function in normal human subjects.

Abstract excerpt

The rise in plasma vasopressin produced by infusion of hypertonic saline varies widely among healthy adults. To determine if these interindividual differences are reproducible, we used linear regression to analyze the relationship of plasma vasopressin to plasma osmolality during repeat hypertonic saline infusion in seven normal subjects. The results confirmed that the slope or sensitivity of the relationship...

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