I have a physical examination in the morning, but I had breakfast. What should I do

If you need a physical examination in the morning but have already had breakfast, it is usually recommended that you proactively contact the examination center or doctor, inform them of the situation, and reschedule the examination time. The diet before the physical examination will directly affect the accuracy of multiple test results, especially for items that require fasting, such as blood sugar, blood lipids, liver function, abdominal ultrasound, etc. After having breakfast, the test results of these items may not truly reflect your physical condition, so it is not meaningful to continue with the physical examination. It is recommended to schedule a re examination. The physical examination requires fasting, mainly to ensure the stability and comparability of the test results. After eating, the body will initiate digestion and metabolism processes, and components such as glucose and triglycerides in the blood will significantly increase, interfering with the measurement of blood sugar and blood lipids. At the same time, after eating, the gallbladder will contract and expel bile, resulting in unclear display of the gallbladder during abdominal ultrasound examination, which affects the diagnosis of lesions such as gallbladder polyps and stones. In addition, indicators such as liver function, kidney function, and insulin may also fluctuate due to eating. Therefore, if you have already had breakfast, even if you have only consumed a glass of milk or a small amount of food, you should avoid undergoing tests such as blood tests and abdominal ultrasound. You can first complete projects that are not affected by diet, such as height, weight, blood pressure, electrocardiogram, chest X-ray, etc., but be sure to inform the staff proactively during the physical examination registration that you have eaten. They will guide you on which projects can be completed on the same day and which ones require separate appointments. For items that require fasting, it is recommended that you go to the hospital or physical examination center again in the early morning after fasting for 8 to 12 hours for retesting. Before the follow-up examination, please maintain a normal daily routine, avoid consuming high-fat and high sugar foods the night before, and try not to drink water or only drink a small amount of plain water in the morning. If you have chronic diseases such as diabetes and hypertension and need to take medicine for a long time, it is recommended to consult the doctor before the physical examination to determine whether you can take medicine with a small amount of water to avoid blood pressure or blood sugar fluctuations due to drug withdrawal. In short, after having breakfast, the safest thing to do is to pause the examination items that require fasting and arrange another time for retesting to ensure the accuracy and reliability of the physical examination results. To ensure the accuracy of the physical examination results, it is recommended that you maintain a regular diet and schedule before rescheduling the examination, avoiding overeating and overwork. The dinner before the physical examination should be light, avoiding alcohol, greasy food, and sugary drinks, and not eating after 8 pm. On the morning of the physical examination, try to maintain an empty stomach and avoid drinking water or only drink a small amount of plain water. If you have long-term medication, you should consult a doctor in advance to see if you need to pause or adjust your medication. During the physical examination, please truthfully inform the doctor of your medical history, medication use, and allergy history, so that the doctor can comprehensively evaluate your health condition. After the physical examination, please keep the report properly and conduct necessary follow-up or treatment according to the doctor's advice.