Red cell samples are passed through a zone of focused illumination, and a scatter vs. time pulse is obtained for each. Each pulse is analyzed for pulse width, pulse area, and pulse shape. These parameters are respectively collected, and three coefficients of variation are obtained for each such collection....http://www.google.de/patents/US4596464?utm_source=gb-gplus-sharePatent US4596464 - Screening method for red cell abnormality
