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.
One of the measurements made during a complete blood count test is the hematocrit. A hematocrit blood test or an HCT blood test is a test where the total volume of red blood cells is checked vis-a-vis the volume of blood that has been drawn. The HCT blood test is therefore used to determine how much of the blood drawn is made up of red blood cells. There are two factors that are variables when it comes to the HCT blood test results. The number of red blood cells in the blood is one such factor. The other factor is the size of each red blood cell. Also read more on MCH blood test.