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.
Passport Agencies. Proof of immediate international travel, the Expedited Fee, and an appointment are required for each application submitted in person at a Passport Agency or Center. To schedule an appointment, call the National Passport Information Center 24/7 at 1-877-487-2778.