In some anemias, such as pernicious anemia, the amount of variation (anisocytosis) in RBC size (along with variation in shape - poikilocytosis) causes an increase in the RDW.   The CBC is used as a broad screening test to check for such disorders as anemia, infection, and many other diseases.
Obtaining a Travel Authorization Number A Travel Authorization Number (T-Number) is required for those employees where a local rule applies and for all non-employee travel. It is needed for all travel involving an overnight stay or the purchase of an air, rail, or bus ticket.
Authority for such use will be indicated in block 15 of the employee's Travel Authorization (Form DI-1020). In addition, Request For Authorization To Use Government-Owned Or Leased Motor Vehicle Between Employee's Residence And Place of Employment (Form 7-1523), shall be completed and signed by the authorizing official.