1 History presents an historian with the task of producing a dialogue between the past and the present. 2  But as these temporal co-ordinates cannot be fixed, history becomes a continuous interaction between the historian and the past.
A routine blood test usually only test for some general features, like potassium, sodium, creatinine, urea, C-reactive protein and a few other. It does often make a blood count of both red blood cells and white blood cells too. In that way it can detect leukemia.
Blood tests assess levels of different chemicals, cells and enzymes in the blood; a normal reading may indicate that a person is healthy, while low or high levels may indicate that a person has an illness or infection. Blood tests are very common; most people will have a number of blood tests during their lifetime.In many cases, blood tests are done as a routine check on a personâs general health.However, if a person is experiencing symptoms of an illness or infection, they may have a blood test to determine what the problem is; a blood test is an important diagnostic instrument.lood tests are very common; most people will have a number of blood tests during their lifetime.