Abstract: A test device includes a housing and a carrier detachable from the housing. The housing includes a socket, and the carrier contains a testing element, and the carrier along with the testing element therein is capable of being inserted into the housing through the socket. The housing includes a blocking structure and a locking structure. The blocking structure and the locking structure are integrated to form a locking component. When the carrier is inserted into the housing, and a position of the carrier is locked by the locking structure, the carrier is abutted against the blocking structure. The carrier keeps stable after being inserted into the housing; and the carrier is located in the same position for each insertion.

Abstract: The present invention discloses an apparatus for detecting analyte in a liquid sample, comprising a cup body; a first receiving area for receiving a liquid sample; a flow-guiding channel through which a sample can be added or collected; the flow-guiding channel is in communication with the first receiving area, the bottom surface of the flow-guiding channel is a slope; wherein, the first receiving area and the flow-guiding channel are disposed in the cup body; the apparatus further comprises a secondary sampling port; the flow-guiding channel is a groove, in which is provided with a second receiving area; and the second receiving area includes a corner area for collecting samples for secondary sampling. The present invention further provides a method of using the apparatus for detecting an analyte in a liquid sample. The apparatus of the present invention can be used for detecting the presence or amount of an analyte in a liquid sample.