A multi-point method of determining a time-zero blood volume by the tracer dilution technique. A tracer is injected into the blood stream of a living being, and a plurality of mixed samples of blood and tracer are removed from the blood stream at a corresponding plurality of measured time intervals subsequent...http://www.google.de/patents/US5024231?utm_source=gb-gplus-sharePatent US5024231 - Automated multi-point blood volume analyzer