A blood irradiating apparatus is provided including a plurality of irradiating chambers having a base and an openable cover. Each irradiating chamber will include a number of ultraviolet light bulbs configured to provide a wide spectrum of ultraviolet light of differing wavelengths. A number of cuvettes permeable to ultraviolet light will be disposed in the irradiating chamber and configured to permit blood to flow in a turbulent manner sufficient to maximize exposure to ultraviolet light. An adaptable tubing structure will be provided to strategically transport blood through a number of cuvettes for exposure to ultraviolet light during treatment.