Hemoglobin 76 means that the concentration of hemoglobin in peripheral blood is 76 g/L, which is a moderate anemia. Whether hemoglobin 76 g/L is dangerous or not is related to the specific cause of hemoglobin 76. In patients with iron deficiency anemia, the hemoglobin concentration can reach a level of about 76g/L. However, in general, patients with iron-deficiency anemia are at low risk, and the condition is often cured after iron supplementation therapy is given. If the hemoglobin 76g/L is caused by acute leukemia, the consequences are very dangerous. If left untreated, the patient’s anemia symptoms will further worsen, and a series of symptoms such as infections and bleeding will occur. Infections, in particular, can lead to high fever, coughing and phlegm, while anemia can also aggravate the symptoms of infection. In addition, due to bleeding patients may experience bleeding from the nasal cavity and gums, and even cause intracranial hemorrhage, leading to the patient’s death. Whether hemoglobin 76g/L is dangerous or not depends on the specific disease causing hemoglobin 76.