As red blood cells age, their hemoglobin is progressively glycosylated. This invention relates to analyzing the history of blood sugar metabolism over a period of several months by taking a blood sample, separating the cells into age-ordered cohorts, determining glycohemoglobin levels in the cells of...http://www.google.com/patents/US5384239?utm_source=gb-gplus-sharePatent US5384239 - Method for analyzing the glycation of hemoglobin
