Self-test for anemia can be found through some of its own symptoms. Common symptoms in the early stage of anemia include pale skin and mucous membranes, dizziness, headache, tinnitus, tiredness, poor concentration, memory loss, muscle weakness, easy fatigue, rapid breathing and heart rate; palpitations and shortness of breath after activity, loss of appetite, nausea and bloating, abdominal discomfort, constipation or diarrhea, low or excessive urination, low immunity and susceptibility to infection, and disrupted menstrual cycle and low menstrual flow in women of childbearing age. If you want to confirm the diagnosis of anemia, you should go to the hospital for routine blood tests, and it is best to check the venous blood in the morning on an empty stomach. The reference range of normal value of hemoglobin varies according to gender and age, and the range of normal value also varies according to the reagents of different hospitals. The index of our hospital is to confirm anemia with hemoglobin below 130g/L for adult male and 120g/L for adult female.