A device (100, 200) for drying blood samples and preserving analytes in blood samples during storage and transportation comprising: at least one blood sample carrier (140, 150) comprising a sheet of absorbent paper and a bed of a desiccant, the sheet of absorbent paper being mounted on top of the bed of a desiccant, wherein said desiccant is a molecular sieve having adsorption properties of water molecules, said molecular sieve being a sodium aluminosilicate compound having a pore diameter of four Ångström, wherein said sheet of absorbent paper has a uniform pore size and is configured to absorb a predetermined amount of liquid per area, whereby a fixed amount of blood may be stored using a calculated size of absorbent paper, and wherein said sheet of absorbent paper is configured to be cut to collect a portion thereof so that multiple portions are used in separate tests; a box comprised of a top lid (110, 210) and a bottom lid (120, 220), wherein said top lid (110, 210) and bottom lid (120, 220) are configured to lock to one another to provide an enclosure (102, 202) for receiving said at least one blood sample carrier (140, 150); and a plurality of holding areas within said enclosure (102, 202) for holding said at least one blood sample carrier (140, 150), the plurality of holding areas being separated by ridges and further having channels for air circulation. at least one blood sample carrier (140, 150) comprising a sheet of absorbent paper and a bed of a desiccant, the sheet of absorbent paper being mounted on top of the bed of a desiccant, wherein said desiccant is a molecular sieve having adsorption properties of water molecules, said molecular sieve being a sodium aluminosilicate compound having a pore diameter of four Ångström, wherein said sheet of absorbent paper has a uniform pore size and is configured to absorb a predetermined amount of liquid per area, whereby a fixed amount of blood may be stored using a calculated size of absorbent paper, and wherein said sheet of absorbent paper is configured to be cut to collect a portion thereof so that multiple portions are used in separate tests; wherein said desiccant is a molecular sieve having adsorption properties of water molecules, said molecular sieve being a sodium aluminosilicate compound having a pore diameter of four Ångström, wherein said sheet of absorbent paper has a uniform pore size and is configured to absorb a predetermined amount of liquid per area, whereby a fixed amount of blood may be stored using a calculated size of absorbent paper, and wherein said sheet of absorbent paper is configured to be cut to collect a portion thereof so that multiple portions are used in separate tests; a box comprised of a top lid (110, 210) and a bottom lid (120, 220), wherein said top lid (110, 210) and bottom lid (120, 220) are configured to lock to one another to provide an enclosure (102, 202) for receiving said at least one blood sample carrier (140, 150); and a plurality of holding areas within said enclosure (102, 202) for holding said at least one blood sample carrier (140, 150), the plurality of holding areas being separated by ridges and further having channels for air circulation.