The results from excised discarded tissue. Variations in the decay following excision of tissue are expected as clinical parameters, such as temperature and peripheral vasoconstriction, will vary from patient to patient regardless of weight of tissue excised, as well as the condition of the tissue prior to excision (i.e., there may be some relative ischemia given that the tissue was not planned to be used for transfer). BMI, body mass index; ST, skin tone. (a) The percentage results on human excised discarded tissue. Tissue weight = 460 g, patient age = 60, BMI = healthy, ST = 3. (b) The percentage results on human excised discarded tissue. Tissue weight = 80 g, patient age = 47, BMI = overweight, ST = 3.