An apparatus (10) for non-invasively location of blood vessels within a portion of body, such as an arm (20) is provided. The apparatus (10) contains an infrared portion and an ultrasound portion, preferably integrated therein. In use, the apparatus (10) is placed above a portion of a body to be scanned such as an arm (20), infrared radiation and ultrasonic energy from the relevant infrared portion and ultrasonic portion is then directed onto the body portion. The reflected infrared radiation is then measured to determine the location of a first vessel type while the reflected ultrasonic energy is utilised to determine the location of a second vessel type within the body portion being scanned.