Robert P. Heaney, Robert R. Recker, and Connie M. Weaver.
Center for Hard Tissue Research, Creighton University, Omaha, Nebraska: and Department of Foods and Nutrition, Purdue University, West Lafayelte, Indiana. USA.
This study looks at the relationship between calcium solubility and absorption, listing seven calcium sources. Two of the sources used were Albion products: CCM (calcium citrate malate) and calcium bisglycinate chelate. The other calcium sources were three found naturally in foods and two other popular forms found commercially: calcium carbonate and calcium citrate. This study is the result of 352 studies on human subjects and collated data from several years of absorption protocols.