Device for taking a sample of biological liquid

A device to collect a sample of a biological liquid to be inserted into a portable reader to analyze the biological liquid, the device comprising:

• a transparent or translucent strip extending along a longitudinal axis and comprising, on an upper face of the strip, a plurality of color-changing reactive elements arranged one after the other along the longitudinal axis;
• an absorbent assembly extending along the longitudinal axis and comprising:
• a biological liquid deposition portion and a diffusion band to diffuse the biological liquid arranged over a top of the plurality of color-changing reactive elements;
• a housing extending along the longitudinal axis between two lateral ends, the housing comprising:
• a housing bottom, the strip being arranged on the housing bottom, a lower face of the strip being arranged facing the housing bottom, each reactive element being arranged by transparency through the strip facing an opening of the housing bottom;
• a cover arranged over a top of the diffusion band, and comprising at least one protruding pattern forming a first pressing surface configured to press the diffusion band into contact with the plurality of color-changing reactive elements;
• and
• an access opening configured to provide access to the biological liquid deposition portion.