Control liquid containing an adsorbent

US6613570B2 · kind B2 · utility

Assignee

• Roche Diagnostics GMBH · DE

Inventors

• Wolfgang-Reinhold Knappe · Ludwigshafen, DE
• Otto Gaa · Worms, DE
• Volker Zimmer · Laumersheim, DE
• Joachim Hoenes · Zwingenberg, DE
• Bernd Hiller · Lampertheim, DE
• Franz Wittmann · Hockenheim, DE
• Beate Koschorreck · Schriesheim, DE

Key dates

• Filing date: Jun 29, 2001
• Grant date: Sep 2, 2003
• Expiry date: Jul 5, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/104998
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An aqueous control liquid is provided that contains glucose at a known concentration and cyclodextrin. A method is also provided that binds a wetting agent from a region of a test element that comes into contact with a sample. The method includes contacting the region with a control liquid that has a substance selected from the group of cyclodextrin derivatives and dispersed materials having a specific surface of 100 m2/g to over 1000 m2/g. A method for controlling the function of a measuring system having test strips and a measuring instrument for the determination of glucose in liquid samples is provided that includes contacting the test strip with a control liquid containing glucose at a known concentration and at least one substance selected from the group consisting of cyclodextrins and cyclodextrin derivatives and detecting a signal caused by the glucose contained in the control liquid.