Blood glucose detector for measuring blood glucose in a blood sample (32) drawn from a blood sample collection site (40) in the body of a subject, comprising a test strip (10); characterized by contacts ( 16) conductors positioned in the test strip (10) and defining a blood sample detection zone (12); said test strip (10) having a blood transport channel (18) having a mouth at one end fluid communication with the blood sample volume detection zone (12), and a measurement site (20) at an opposite end of the blood transport channel (18); in which the test strip (10) is movable in a bent state between a first position, in which the blood sample volume detection zone faces the blood sample collection site (40), and a second position, in which the mouth of the transport channel (18) of blood is in front of the extraction site (40) n demonstrates blood, in which a blood sample (32), which bridges the contacts (16) that define the blood sample detection zone (12), allows electrical communication between the contacts (16) to detect a volume of blood sample, and in which the volume of blood sample detected is large enough for the blood sample (32) to move through the blood transport channel (18) to make contact with the site (20) of measurement when working of the blood transport channel (18) is moved to said blood sample collection site (40).Detector de glucosa en sangre para medir la glucosa en sangre en una muestra (32) de sangre extraída desde unsitio (40) de extracción de muestra de sangre en el cuerpo de un sujeto, que comprende una tira (10) reactiva;caracterizado porcontactos (16) conductores posicionados en la tira (10) reactiva y que definen una zona (12) de detección devolumen de muestra de sangre;teniendo dicha tira (10) reactiva un canal (18) de transporte de sangre que tiene una boca en un extremo encomunicación fluida con la zona (12) de detección de volumen de muestra de sangre, yun sitio (20) de medición en un extremo opuesto del canal (18) de transporte de