Transfused platelets (plts) are either pooled random-donor platelet (plt) concentrates or single-donor apheresis plts. When stored for 5 days, all of these products are equally efficacious.
There are three parts to a CUSIP Number. Example: 912828 + NB + 2 would be 912828NB2 CUSIP 1  #. The First 6 digits (912828) identify the issuer. 2  In this case, the issuer is the Treasury Department. 3  The next two characters (NB) identifies the specific bond. 4  The last digit (2) has no significance in identifying the bond.
CUSIPs are used to identify securities and are used in the clearing and settlement of transactions. A CUSIP consists of a 9 character code and stands for Committee on Uniform Security Identification Procedures. CUSIPs typically identify US or Canadian securities, however even companies outside the United States can apply for a CUSIP. They are popular for international debt offerings (and national ones as well) and to get listed on any major US stock exchange a CUSIP is mandatory.