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:
Jul. 24, 2007
Filed:
Oct. 31, 2003
Jiong Wu, La Vista, NE (US);
Wayne L. Ryan, Omaha, NE (US);
Jiong Wu, La Vista, NE (US);
Wayne L. Ryan, Omaha, NE (US);
Streck, Inc., La Vista, NE (US);
Abstract
A reagent system is provided for substantially lysing red blood cells in a whole blood sample prior to leukocyte analysis, which system includes a first reagent for substantially lysing the red blood cells in the whole blood sample, and a second reagent for quenching the activity of the first reagent. The first reagent is formulated to include an autoclaved saponin compound and an acid selected from the group consisting of a halogenated carboxylic acid, a phosphoric acid and a combination thereof. The second reagent includes a base and has a pH value of about 8 to 12. Also provided is a method of lysing the red blood cells and stabilizing white blood cells present in a sample of whole blood.