Pitfalls in the measurement of plasma osmolality pertinent to research in vasopressin and water metabolism

Nicolaas Bohnen; Dick Terwel; Marianne Markerink; Jeroen A. ten Haaf; Jellemer Jolles

doi:10.1093/clinchem/38.11.2278

Pitfalls in the measurement of plasma osmolality pertinent to research in vasopressin and water metabolism

Nicolaas Bohnen, Dick Terwel, Marianne Markerink, Jeroen A. ten Haaf, Jellemer Jolles

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Abstract

The reliability of measurements of plasma osmolality is known to be biased by technical artifacts, such as the anticoagulant and the osmometric technique used; the resulting measurement errors therefore may cause errors in interpretation of data. In assessing the potential biasing influence of procedural variables, we found that the temperature at which fresh plasma samples were stored, the duration of storage, and the freezing and thawing of samples appeared to significantly (P < 0.01) affect osmolality values around the narrow physiological range. These factors should be considered in the interpretation of studies on the osmoregulation of vasopressin secretion. In particular, the results suggest that data obtained for any but fresh samples, whether frozen-thawed samples or samples stored at room temperature, are unreliable.

Original language	English
Pages (from-to)	2278-2280
Number of pages	3
Journal	Clinical Chemistry
Volume	38
Issue number	11
DOIs	https://doi.org/10.1093/clinchem/38.11.2278
Publication status	Published - 1 Jan 1992

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title = "Pitfalls in the measurement of plasma osmolality pertinent to research in vasopressin and water metabolism",

abstract = "The reliability of measurements of plasma osmolality is known to be biased by technical artifacts, such as the anticoagulant and the osmometric technique used; the resulting measurement errors therefore may cause errors in interpretation of data. In assessing the potential biasing influence of procedural variables, we found that the temperature at which fresh plasma samples were stored, the duration of storage, and the freezing and thawing of samples appeared to significantly (P < 0.01) affect osmolality values around the narrow physiological range. These factors should be considered in the interpretation of studies on the osmoregulation of vasopressin secretion. In particular, the results suggest that data obtained for any but fresh samples, whether frozen-thawed samples or samples stored at room temperature, are unreliable.",

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AU - Bohnen, Nicolaas

AU - Terwel, Dick

AU - Markerink, Marianne

AU - ten Haaf, Jeroen A.

AU - Jolles, Jellemer

PY - 1992/1/1

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N2 - The reliability of measurements of plasma osmolality is known to be biased by technical artifacts, such as the anticoagulant and the osmometric technique used; the resulting measurement errors therefore may cause errors in interpretation of data. In assessing the potential biasing influence of procedural variables, we found that the temperature at which fresh plasma samples were stored, the duration of storage, and the freezing and thawing of samples appeared to significantly (P < 0.01) affect osmolality values around the narrow physiological range. These factors should be considered in the interpretation of studies on the osmoregulation of vasopressin secretion. In particular, the results suggest that data obtained for any but fresh samples, whether frozen-thawed samples or samples stored at room temperature, are unreliable.

AB - The reliability of measurements of plasma osmolality is known to be biased by technical artifacts, such as the anticoagulant and the osmometric technique used; the resulting measurement errors therefore may cause errors in interpretation of data. In assessing the potential biasing influence of procedural variables, we found that the temperature at which fresh plasma samples were stored, the duration of storage, and the freezing and thawing of samples appeared to significantly (P < 0.01) affect osmolality values around the narrow physiological range. These factors should be considered in the interpretation of studies on the osmoregulation of vasopressin secretion. In particular, the results suggest that data obtained for any but fresh samples, whether frozen-thawed samples or samples stored at room temperature, are unreliable.

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JO - Clinical Chemistry

JF - Clinical Chemistry

IS - 11

ER -

Pitfalls in the measurement of plasma osmolality pertinent to research in vasopressin and water metabolism

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