Symptoms: edema, anemia,... Pay special attention to some manifestations such as: acute infections, skin diseases, digestive organs, cardiovascular system, respiratory system, thyroid, peripheral lymph nodes, spleen... Signs or symptoms of acute blood loss such as black stools, vomiting blood, coughing up blood, nosebleeds, bleeding, hematuria... Blood pressure measurement, status determination patient's blood pressure * Do subclinical tests 2.2.5.