Diagnostic kit
AssigneeMerck & Co., Inc.
InventorJacques A. Nadeau
Life of this patent
Estimating the term…
Abstract
This invention relates to a colloid-forming composition useful in medical diagnosis. More particularly, it relates to an improved kit useful as a diagnostic aid comprising colloid-forming reagent solutions. It further relates to a kit useful in medical diagnosis which comprises in combination a lyophilized Stannous-phytate complex and a buffered calcium chloride solution.
Claims5
A kit for preparing Technetium 99m calcium phytate colloid injection which comprises in separate containers:
- a. a freeze-dried solid mixture of sodium phytate and stannous chloride;
- and
- b. a buffered aqueous solution of calcium chloride having a pH of between 2.7 and 3.7;
- wherein the said sodium phytate and the said calcium chloride are present in a ratio of approximately 1.0 to 1.0 by weight.
In a process for preparing an injectable aqueous colloid of Technetium 99m calcium phytate, the improvement which comprises adding a buffered aqueous solution of a soluble calcium salt to a solution of sodium phytate complexed with reduced pertechnate ion.
Dependencies are inferred from the claim text.