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Method of high-precision microsampled blood and plasma mass densitometryThe reliability of the mechanical oscillator technique for blood and plasma density measurements on samples of volumes less than 0.1 ml is examined, and a precision of 0.001 g/l is found if plasma-isodensic heparin solution and siliconized densitometers are employed. Sources of measurement errors in the density determinations include storage of plasma samples, inhomogeneity of blood samples, and density reading before adequate temperature equilibration. In tests of plasma sample storage, the best reproducibility was obtained with samples kept at 4 C. Linear correlations were found between plasma density and plasma protein concentration, blood density and blood hemoglobin concentration, and erythrocyte density and MCHC.
Document ID
19860064512
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hinghofer-Szalkay, H.
(NASA Ames Research Center Moffett Field, CA; Graz, Universitaet, Austria)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Journal of Applied Physiology
Volume: 60
Issue: 3 19
ISSN: 0161-7567
Subject Category
Aerospace Medicine
Accession Number
86A49250
Funding Number(s)
PROJECT: FFWF PROJECT 4200
PROJECT: FFWF PROJECT 3470
Distribution Limits
Public
Copyright
Other

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