Biological test cassettes and medical test systems

A test cassette for analyzing a sample in fluid form, comprising:

• a support and a cassette body, wherein the support is provided with a first via hole, the cassette body is provided with a second via hole corresponding to the position of the first via hole, the cassette body is mounted on a top surface of the support, and the cassette body is further provided with a pretreatment chamber and a first flow channel in communication with the pretreatment chamber;
• a chip, a first connecting tube and a second connecting tube, wherein the chip is slidably provided on a bottom surface of the support, the chip is provided with an analyzing and processing chamber and a second flow channel in communication with the analyzing and processing chamber, the first connecting tube is arranged through the first via hole and the second via hole, and has one end in communication with the first flow channel, and the other end in communication with one end of the second connecting tube, the second connecting tube is a flexible tube that is movable and bendable between the chip and the support, and has the other end in communication with the second flow channel.