TH26482Y - A colorimetric kit made from paper for measuring total cholesterol in whole blood. - Google Patents

Abstract

This paper-based colorimetric test kit is designed for measuring total cholesterol in whole blood. It works in conjunction with standard inkjet-printed color strips for total cholesterol measurement. The color intensity on the test area of the device is observed and compared to the standard color strips. The color intensity on the device is directly proportional to the total cholesterol level. The kit consists of a perforated plastic laminated card, a circular membrane for separating red blood cells, and a filter paper with circular flow channels created using a three-layer wax screen printing technique. All components are stacked and laminated to create the complete device. This invention results in a small, inexpensive device that reduces testing costs, uses minimal chemicals and samples, is durable, easy to use (not requiring specialized expertise), eliminates the need for a laboratory, and provides rapid results within 5-10 minutes with comparable accuracy to standard techniques.

Claims (1)

OCR 10KL (27/08/2568) 1. A colorimetric test kit made of paper for the measurement of total cholesterol in whole blood, which is characterized by the following components: a circularly perforated plastic card (1), a circular membrane for separating red blood cells (3), and a filter paper with circular flow channels created by a three-layer wax screen printing technique (4), all components are stacked and placed in a laminator to form a complete specimen (5). The back of the device (c), at the measurement site of the device (4), is coated with N-CDs, ABTS, and the enzymes ChE and ChOx. - A standard color strip for the measurement of total cholesterol in whole blood, printed by an inkjet printer (a), consisting of two parts: the first part is a color strip for comparison with the measurement site on the un-dropped blood device (1) with circularly perforated holes (2), and the second part is a color strip for comparison. Compared to the measurement area on the blood sample drop device (3) which has circular holes (4) - the back of the device (c.) at the measurement area of the device (4) is coated with N-CDS ABTS and ChE and Chox enzymes - inside the paper-fabricated colorimetric device for total blood cholesterol quantification, there is a circular red blood cell separation membrane (3), a filter paper with circular flow channels created by a three-layer wax screen printing technique (4), with a standard color strip for total cholesterol quantification printed by an inkjet printer (a.) to enable the total blood cholesterol to be measured by observing the matching color intensity of the measurement area of the device and the standard color strip.