Do I need to go on an empty stomach for a blood routine check

Blood routine examination generally does not require fasting. Blood routine examination mainly detects indicators such as red blood cells, white blood cells, platelets, etc. Eating usually does not have a significant impact on these results. The items of blood routine examination mainly include red blood cell count, hemoglobin concentration, white blood cell count and classification, platelet count, etc. These indicators reflect the quantity and morphological characteristics of cellular components in the blood, and belong to basic hematological tests. Although eating may cause slight changes in certain biochemical components in the blood, its impact on blood cell count and morphology is relatively small. In clinical practice, fasting is usually not mandatory for routine blood tests unless specifically requested by the doctor. Some medical institutions may recommend avoiding immediate blood collection after a high-fat diet to prevent it from affecting instrument testing, but this is not a universal requirement. For situations where biochemical tests such as blood glucose and blood lipids need to be performed simultaneously, doctors will clearly inform that fasting for 8-12 hours is required. When conducting a simple blood routine review, if there are no other examination items that require fasting, the examination can be performed after eating normally. However, it is important to avoid vigorous exercise or emotional excitement before the examination, as these factors may temporarily increase the white blood cell count. Drinking moderate amounts of water before blood collection helps to fill the veins and facilitates blood collection procedures. If there are abnormal indicators in the examination results, it is recommended to have a follow-up or further examination under the guidance of a doctor. Maintaining a balanced diet and regular daily routine can help maintain stable blood indicators. If there are any special dietary or medication situations before the examination, medical staff should be informed proactively.