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Biological variation of arginine vasopressin

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Abstract

Purpose

There is growing interest in the measurement of plasma levels of arginine vasopressin (AVP) for the assessment of mild dehydration. However, the principles of biological variation have not been applied to the study of AVP and understanding biological variation of AVP may provide insights regarding measurement thresholds. The purpose of this investigation was to determine the biological variation of AVP in healthy euhydrated individuals to understand the potential for establishing both static and/or change thresholds of importance.

Methods

We studied 29 healthy volunteers (24 men and 5 women) while controlling for hydration and pre-analytical factors. All subjects completed between 2–8 trials where biological variation was determined using widely published methods. We determined the intraindividual, interindividual, and analytical coefficients of variation (CVI, CVG, and CVA, respectively) and subsequently the index of individuality and heterogeneity (II and IH, respectively).

Results

AVP did not reach the IH threshold required to be considered useful in the dynamic assessment of physiological deviations from normal. AVP levels approached the II threshold required to be considered useful in the static assessment of physiological deviations from normal.

Conclusions

This analysis demonstrates that AVP assessment is unlikely to yield useful information about hydration status.

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Abbreviations

AVP:

Arginine vasopressin

CVA :

Analytic coefficient of variation

CVG :

Interindividual coefficient of variation

CVI :

Intraindividual coefficient of variation

DL:

Decision level

IH:

Index of heterogeneity

II:

Index of individuality

Posm:

Plasma osmolality

SD:

Standard deviation

Uosm:

Urine osmolality

USG:

Urine specific gravity

%CV:

Percent coefficient of variation

References

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Acknowledgements

This work was funded by the US Army Medical Research Materiel Command’s Military Operational Medicine Research Program.

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Authors and Affiliations

Authors

Contributions

Authors KJS, RWK and SNC conceived and designed the research. JSS, RWK, and SNC conducted the study. KJS, JSS, and SNC analyzed the data. KJS, RWK, and SNC wrote the manuscript. All authors read, edited, and approved the manuscript.

Corresponding author

Correspondence to Jeffery S. Staab.

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Conflict of interest

The opinions or assertions contained herein are the private views of the author(s) and are not to be construed as official or reflecting the views of the Army or the Department of Defense. Any citations of commercial organizations and trade names in this report do not constitute an official Department of the Army endorsement of approval of the products or services of these organizations. No authors have any conflicts of interest to disclose. Approved for public release; distribution is unlimited.

Additional information

Communicated by Keith Phillip George.

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Sollanek, K.J., Staab, J.S., Kenefick, R.W. et al. Biological variation of arginine vasopressin. Eur J Appl Physiol 120, 635–642 (2020). https://doi.org/10.1007/s00421-020-04303-x

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  • DOI: https://doi.org/10.1007/s00421-020-04303-x

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