The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1988
Filed:
Oct. 02, 1986
James D Lapicola, Pleasant Hill, CA (US);
Sherburne M Edmondson, Jr, Cupertino, CA (US);
Sequoia-Turner Corporation, Mountain View, CA (US);
Hematology Marketing Associates, Inc., Plano, TX (US);
Abstract
Improved reagents and methods for obtaining distinct volumetric differentiation of platelets, erythocytes and certain leukocyute subpopulations are disclosed. 1,3-dimethylurea is disclosed as a cell stabilizing agent for use in the blood diluent reagent. A hematology analyzer detergent is described wherein the addition of a wetting agent to the diluent of the instant invention provides the necessary attributes of an automatic analyzer detergent. The lysing reagent exploits the selective and intrinsically gentle lytic qualities of the dodecyl quaternary ammonium salt. The improved method modifies the leukocytes so that the frequent lymphocyte and neutrophil subpopulations are well separated on a volume scale, permitting quantitative evaluation of infrequent and rare leukocyte subpopulations as well as improved enumeration of the lymphocytes and neutrophils.