Liquid test strip

Abstract

This invention discloses an analytical strip comprising a substrate. The substrate has a channel provided concavely on the upper surface thereof. The channel comprises a first area for receiving a fluid sample, a second area for delivering the fluid sample, and a third area where the fluid sample reacts. These three areas are connected sequentially. Nitrocellulose layers are formed at the bottoms of both the second area and the third area. Each of the nitrocellulose layers comprises a hollow-matrix conformation. In addition, the nitrocellulose layer of the second area has an average thickness that is not greater than that of the nitrocellulose layer of the third area. The strip also comprises a reaction material formed in the hollow-matrix conformation of each of the nitrocellulose layers.

Description

technical field [0001] The invention relates to a detection test piece, in particular to a fluid detection test piece used in biochemical detection and immunological detection. Background technique [0002] In the known technology of biochemical detection and immunoassay using fluid detection test strips, fluid detection test strips are designed with flow channel or micro-channel structure and surface hydrophilic and hydrophobic treatment on the substrate or substrate, and because the flow channel is not surrounded by water-absorbing materials , and the fluid to be tested mostly contains high-viscosity components such as proteins or sugars, so when the fluid to be tested flows through, it will remain on the flow channel, making the fluid to be tested unable to fully react. In this way, not only The waste of fluid to be tested is more likely to cause errors in the final test results. [0003] In addition, the fluid detection test piece of the known technology can be designed...

AI Technical Summary

Problems solved by technology

However, regardless of any of the above methods, after the fluid to be tested is injected into the flow channel, air bubbles of different sizes are often generated or involved to block the flow channel, causing errors in actual measurement, and even lead to test failure. Micro-actuator or valve) increases the difficulty of the overall design and the cost of test pieces

[0004] Finally, the test pieces of the known technology often use die casting, injection molding or imprinting (imprint) to make flow channel or micro channel structure on the substrate, so polyethylene (PE), poly Higher-priced plastic polymers such as vinyl chloride (PVC) or polypropylene (PP) are used as materials and the mold wears out quickly, resulting in an increase in the overall cost of the test piece

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