Journal
BIOLOGICAL TRACE ELEMENT RESEARCH
Volume 160, Issue 1, Pages 132-142Publisher
HUMANA PRESS INC
DOI: 10.1007/s12011-014-0033-5
Keywords
Mineralomics; Reference ranges; Metallomics; Plasma spectroscopy; Bioanalytical
Funding
- NIH Eastern Regional Metabolomics Resource Core (NIH Common Fund) [1U24DK097193]
- NIH Clinical and Translational Sciences Award (NCATS) [UL1TR00111]
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Minerals are inorganic compounds that are essential to the support of a variety of biological functions. Understanding the range and variability of the content of these minerals in biological samples can provide insight into the relationships between mineral content and the health of individuals. In particular, abnormal mineral content may serve as an indicator of illness. The development of robust, reliable analytical methods for the determination of the mineral content of biological samples is essential to developing biological models for understanding the relationship between minerals and illnesses. This paper describes a method for the analysis of the mineral content of small volumes of serum and whole blood samples from healthy individuals. Interday and intraday precision for the mineral content of the blood (250 mu L) and serum (250 mu L) samples was measured for eight essential minerals-sodium (Na), calcium (Ca), magnesium (Mg), potassium (K), iron (Fe), zinc (Zn), copper (Cu), and selenium (Se)-by plasma spectrometric methods and ranged from 0.635 to 10.1 % relative standard deviation (RSD) for serum and 0.348-5.98 % for whole blood. A comparison of the determined ranges for ten serum samples and six whole blood samples provided good agreement with literature reference ranges. The results demonstrate that the digestion and analysis methods can be used to reliably measure the content of these minerals and potentially of other minerals.
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