Reticulocytes are not fully mature red blood cells, and the value in the peripheral blood reflects the function of bone marrow erythropoiesis and is therefore important for the diagnosis of hematological diseases and the observation of response to treatment. Reticulocytes are an important indicator of the hematopoietic function of the bone marrow red lineage as well as the efficacy of anemia and related diseases. What are the examination methods for heterogeneous reticulocytes? 1.Direct smear examination In normal human blood, urine, cerebrospinal fluid, pleural fluid, pericardial fluid and peritoneal fluid, there are no bacteria present. Smear examination includes pharyngeal wall smear, nasal secretion smear, pus smear, skin smear, thoracic cavity, pericardial cavity, abdominal cavity and joint capsule fluid smear, sputum smear, urine sediment smear, cerebrospinal fluid smear, stool smear and vaginal secretion smear. Direct smear examination can help detect and assist in diagnosis. 2.General radiography X-rays are mainly used to detect skeletal lesions, but they are also quite useful for detecting soft tissue lesions. Common examples include chest X-rays, which are used to diagnose lung diseases such as pneumonia, lung cancer or emphysema, and abdominal X-rays, which are used to detect intestinal obstruction, free gas (freeair, due to visceral perforation) and free fluid (freefluid). The use of X-rays for diagnosis is controversial in some cases, such as stones (which have little to no blocking effect on X-rays) or kidney stones (which are generally, but not always, visible). 3. CT contrast scan CT contrast scan is a method in which an organ or structure is first contrasted and then scanned. For example, injecting 8-10ml of iodotrexone or 4-6ml of air into the brain pool for brain pool imaging and then scanning, which is called brain pool imaging CT scan, can clearly show the brain pool and small tumors in it. 4.Blood test Routine blood test is the most general and basic blood test. Routine blood test is usually done with peripheral blood, such as blood from fingertip or earlobe. After the blood cell analysis instrument, the computer reports the results, and this item has become a practice to examine patients. Blood consists of two major parts, liquid and tangible cells, and routine blood tests are performed on the cellular part of the blood. Blood has three different functions of cells – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets. Diseases are determined by observing changes in number and morphological distribution. It is one of the common auxiliary tests used by doctors to diagnose the condition.