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.