Does a blood routine check require fasting?

Blood routine check generally does not require fasting, but if blood glucose, blood lipids, and other items need to be tested at the same time, fasting is recommended.

Blood routine mainly detects indicators such as red blood cells, white blood cells, and platelets, which are less affected by diet. Eating during routine follow-up does not significantly interfere with blood routine results, so testing can also be completed in a non fasting state. But for situations where metabolic indicators such as blood glucose, blood lipids, and liver function need to be checked synchronously, fasting for 8-12 hours can reduce the interference of food on the test results. For some special groups, such as diabetes patients, fasting blood sampling may cause hypoglycemia, so the detection scheme needs to be adjusted under the guidance of doctors. If only a blood routine check is needed, one can seek medical attention after eating normally. But it is recommended to confirm with the doctor in advance whether other testing items need to be combined to avoid duplicate blood collection due to insufficient preparation. Avoid vigorous exercise or emotional excitement before blood collection, and keep your arms clean and dry. After the examination, press the needle hole for 3-5 minutes to prevent subcutaneous bleeding, and avoid the bleeding site from getting wet within 24 hours.