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.
A blood test involves drawing blood at a health care professionalâs office or a commercial facility and sending the sample to a lab for analysis. A blood test can detect high levels of creatinine, a waste product of normal muscle breakdown, which may indicate kidney disease.