10
Views
31
CrossRef citations to date
0
Altmetric
Original Article

Determination of Calcium Fractions of Serum. III. Ionized Calcium in Ultrafiltrates of Normal Serum and Examination of Pertinent Variables

Pages 223-230 | Received 22 Jan 1970, Accepted 14 Mar 1970, Published online: 13 May 2010
 

Abstract

Mean normal values obtained by ultrafiltration and spectrophotometric methods were 5.58, 4.56, 1.02, and 4.24 mg/100 ml for ultrafiltrable, ionized, complexed, and protein-bound calcium in serum. Reproducibility of all fractions was 0.10–0.12 mg/100 ml. The effect of pH, temperature, and storage has been studied for both steps of the fractionation procedure. Significant amounts of calcium are complexed by heparin in plasma and by bicarbonate in physiological concentrations.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.