Patent ID: 8771485

Claim:
A test strip comprising: a detection area having: a sampling hole; at least one sampling channel corresponding to the sampling hole; at least one reaction area located in the sampling channel; and at least one pressing part located around the sampling hole; a circuit system electrically connected to the reaction area; a substrate having a substrate hole; a spacer layer disposed over the substrate, the spacer layer having a channel gap corresponding to the substrate hole; an upper cover disposed over the spacer layer and having an upper cover hole; and at least one inner sampling projection located between the sampling hole and the sampling channel, the inner sampling projection extending and projecting from an edge of the sampling channel to the sampling hole, the inner sampling projection comprising a substrate inner projection of the substrate and an upper-cover inner projection of the upper cover and the edge of the inner sampling projection having an inner sampling opening in communication with the sampling hole and the sampling channel; wherein an overlapped area of the substrate hole, the channel gap and the upper cover hole is defined as the sampling hole, the sampling channel is formed among the channel gap, the substrate and the upper cover.