We have been tracking tissues with Meditech for a number of years. We built the product "Tissue" into our products. They are entered in by the "Lots" routine which creates an unique ID number for our tracking purposes at that point. Also, when we enter it into the system, we enter all the tracking information we can find into the "comments" area. This would include : type of tissue (Opteform disc, Graft jacket, etc), size listed on package, any donor ID numbers, any other info on package. The lot number will be asked for in the normal entering of the unit. The unit is then issued through Meditech the same as a blood product and "tranfusion" data is entered after it is implanted.