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.
Routine urinalysis can confirm the presence of red blood cells in the urine. The urine can also be tested for infection by sending a sample for culture. Blood tests may be done to check kidney function. If the source of the blood is unclear, a CT scan of the ureters and kidneys may be performed to rule out any stones or structural abnormalities responsible for the blood.