Using pre-printed labels can indeed be complicated and there are many considerations. First you need to consider if the size of your syringes can accommodate a full face label. If so, you will need to order base labels with your supplier name, address, and FDA reg. number. You will also need three identical copies of the DIN barcode. Check to be sure your supplier will be attaching these to the parent units in the quantity you need. If you can limit the number of different product codes that you will be using for neonates, I would focus on ordering only those product codes that you know you always have in inventory. It sounds as if you always have E0311 available. You did not mention if you used an irradiated product for neonates and whether or not you irradiated on site. This will determine the correct product code. E0311 is not an irradiated product, so be sure you have the correct code of the parent unit. Once that is determined you can order product code labels as Mabel described above, A0, B0, Aa, and Ab. If you only use O Negative, then you only need to order one ABO/Rh type label. If not, you will need to order all ABO/Rh types you will be using. You are not required to have a barcoded Expiration Date/Time label so that can be hand written. CMV negative labels are also available. Incidently E0291, mentioned in your post is not an leuko reduced product. Hope this helps. Dawn