The Central Intelligence Agency is responsible for the intelligence gathering, processing, analysis and reporting procedures conducted throughout the world outside of the United States. The agency monitors (watches) and determines if there are issues of interest occurring in the world.
A typical adult has a blood volume of approximately 5 liters, with females generally having less blood volume than males. Blood volume is regulated by the kidneys. B V = P V 1 â H C {\displaystyle BV={\frac {PV}{1-HC}}}. Blood volume measurement may be used in people with congestive heart failure, chronic hypertension, renal failure and critical care. The use of relative blood volume changes during dialysis is of questionable utility.
Blood transfusion can be performed using a combination of red blood cells, platelets, and plasma. Total volume for each unit is around one pint, in a range of 450 ml to 525 ml. Surgical procedures can involve anywhere from 1 unit to 50 units of blood to complete.