Abstract: The present disclosure provides a test strip including: a conductive pattern formed on a substrate, the conductive pattern being formed from a thin film material, the conductive pattern including: a plurality of electrodes configured to perform a reagent-free measurement of hematocrit levels in a blood sample; a plurality of conductive contacts configured to communicate with a test meter; and a plurality of conductive traces configured to electrically connect the plurality of electrodes to the plurality of conductive contacts; an inert layer positioned on at least a portion of the conductive pattern; and a capillary chamber exposing at least a portion of the plurality of electrodes, the capillary chamber being defined by the inert layer for receiving a blood sample and delivering the blood sample to the plurality of electrodes.

Abstract: A method of non-invasively measuring the presence, absence, or concentration of one or more analytes in a tissue of a subject includes exposing at least a portion of a tissue of the subject to electromagnetic radiation; obtaining electromagnetic radiation measurement data of electromagnetic radiation from the tissue; using a mathematical transformation to filter or smooth the electromagnetic radiation measurement data; and determining the presence, absence, or concentration of one or more analytes by determining a radiation signature of the filtered or smoothed electromagnetic radiation measurement data; correlating the radiation signature of the filtered or smoothed electromagnetic radiation measurement data with the presence, absence, or concentration of one or more analytes to determine the presence, absence, or concentration of one or more analytes in the subject.