Test strip designed to improve spreadability of blood
Disclosed is a test strip for measuring medical data, in which a hydrophilic material is introduced to improve the spreadability of blood. Having the structure comprising a blood-filtering layer designed to filter off either or both of erythrocytes and low-density lipoprotein (LDL) cholesterol from an applied blood sample; a reaction layer in which the blood sample free of erythrocytes and/or low-density lipoprotein (LDL) cholesterol is reacted with an reagent, and a hydrophilic material, intercalated between the blood-filtering layer and the reaction layer, for uniformly spreading the blood sample filtered through the filtering layer, the blood-filtering layer and the reaction layer being stacked between the lower support and the upper cover, the test strip prevents the infiltration of erythrocytes into the reaction layer and improves the spreadability of blood to reduce measurement errors, thus bringing about higher reproducibility.
1. A test strip for measuring medical data in association with a measuring apparatus, comprising:
an upper cover having three application holes;
a lower support having three detected parts at positions corresponding to detecting units of the measuring apparatus;
a blood-filtering layer comprising:
an erythrocyte and low-density lipoprotein (LDL) cholesterol-filtering zone located beneath a middle application hole of the three application holes and designed to filter off both of erythrocytes and low-density lipoprotein (LDL) cholesterol from an applied blood sample; and
an erythrocyte filtering zone designed to filter off erythrocytes from the applied blood sample;
a reaction layer in which the blood sample free of erythrocytes and low-density lipoprotein (LDL) cholesterol from the blood-filtering layer is reacted with an reagent; and
a hydrophilic material of a hydrophilized porous mesh, intercalated between the blood-filtering layer and the reaction layer, for uniformly spreading the blood sample filtered through the filtering layer, the blood-filtering layer and the reaction layer being stacked between the lower support and the upper cover.
2. The test strip according to claim 1 , wherein the porous mesh ranges in pore size from 1 to 500 μm.
3. The test strip according to claim 1 , wherein the hydrophilic material is applied to either or both of the reaction layer and the blood-filtering layer.
4. The test strip according to claim 3 , wherein the hydrophilic material is applied in a form of gel, powder, or film.
5. The test strip according to claim 1 , wherein the hydrophilic material is selected from among polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) and polyethylene glycol (PEG).