Clinical Chemistry Link to Randox Laboratories Web Site
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Clinical Chemistry 29: 858-861, 1983;
This Article
Right arrow Full Text (PDF)
Right arrow Submit an electronic Letter to
the Editor about this paper
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Allen, J. C.
Right arrow Articles by Neville, M. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Allen, J. C.
Right arrow Articles by Neville, M. C.

Clinical Chemistry, Vol 29, 858-861, Copyright © 1983 by American Association for Clinical Chemistry

Ionized calcium in human milk determined with a calcium-selective electrode

JC Allen and MC Neville

We measured the concentration of ionized calcium in human milk with a Radiometer ionized calcium analyzer at 37 degrees C. This instrument is designed to use simultaneous outputs from a pH electrode and a calcium ion-selective electrode to obtain the true ionized calcium in blood plasma. Because both the ionic strength and the pH of human milk differ significantly from that of plasma, we used a calibration curve that corrected for these variables. No other substances in milk interfered with the electrode response to Ca2+. The Ca2+ concentration of milk decreased and the pH increased as CO2 was lost to the atmosphere. Samples collected in glass capillaries, which minimized CO2 loss, contained 2.84 (SD 0.56) mmol of Ca2+ per liter at pH 6.98. We emphasize the importance of maintaining physiological CO2 concentrations when Ca2+ is being measured in milk.


The following articles in journals at HighWire Press have cited this article:


Home page
 J. Nutr.Home page
T. Matsui, Y. Kawakita, and H. Yano
Dietary Skim Milk Powder Increases Ionized Calcium in the Small Intestine of Piglets Compared to Dietary Defatted Soybean Flour
J. Nutr., July 1, 1997; 127(7): 1357 - 1361.
[Abstract] [Full Text]

Home page
 J Hum LactHome page
G. B. Carey, T. J. Quinn, and S. E. Goodwin
Breast Milk Composition After Exercise of Different Intensities
J Hum Lact, June 1, 1997; 13(2): 115 - 120.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1983 by the American Association for Clinical Chemistry.