Test device for detecting analyte in liquid sample

A test device for detecting an analyte in a liquid sample, the test device comprising:

• a label pad, containing a label;
• a lateral flow testing element, having a nitrocellulose membrane in a testing area;
• a housing, having an upper housing and a lower housing;
• and
• a diversion element, including a liquid outlet end;
• wherein the label pad includes an end overlapping on the nitrocellulose membrane, the lateral flow testing element is located between the upper housing and the lower housing, the housing includes a housing end including a housing end opening, the diversion element includes a diversion element part located in the housing end opening, and the liquid outlet end of the diversion element is in contact with the label pad on the lateral flow testing element in the housing so that the liquid sample from the diversion element is capable of directly flowing to a label area;
• wherein the lower housing includes a groove, the diversion element includes a diversion element surface, the lateral flow testing element is located in the groove, and the upper housing comprises a liquid retention chamber configured to receive a part of the liquid sample from the diversion element surface;
• wherein the liquid retention chamber has a liquid retention chamber opening, the diversion element has a diversion element upper surface for receiving the liquid sample, and the liquid retention chamber opening is covered by the diversion element upper surface;
• wherein the housing includes a housing inner surface, the liquid retention chamber is composed of compartment chambers formed by protruding plastic press strips set on the housing inner surface, and each of the press strips includes a press strip surface being in contact with the diversion element upper surface;
• wherein the liquid outlet end includes a liquid outlet end portion, the test device further comprises a blocking element for reducing an amount and a flow rate of the liquid sample at the liquid outlet end portion flowing to the label area, wherein the blocking element is disposed in the housing, and the liquid outlet end portion is in contact with the blocking element.