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.
Fecal Occult Blood Test (FOBT) The fecal occult blood test (FOBT) is a type of screening that could indicate colorectal cancer, but not diagnose it. This test checks for blood in the stool which cannot be seen with the naked eye. If blood is detected, additional testing would be required to determine the source of the blood. Fecal occult blood testing is what is known as a qualitative test. It only detects the presence or absence of blood. If blood is present, the test cannot evaluate how much blood is in the stool.