Can I do a blood test in the afternoon? Pay attention to 7 important matters

Routine blood test is a routine item in physical examination, but although it is a general item, you still need to pay attention to some details. Routine blood tests are generally scheduled in the morning because blood sugar test results taken when fasting are more accurate. However, if there are special circumstances, it can also be considered to be scheduled in the afternoon, provided that the doctor does not explicitly require it to be done in the morning.

1. Can I do a blood test in the afternoon?

You can do a routine blood test in the afternoon, which is also a common item in physical examination. However, when doing tests such as blood lipids, liver function tests, fasting blood sugar, etc. that require fasting blood sampling, fasting blood sampling is required in the morning.

Fasting does not only mean not eating breakfast on the morning of the examination. You should also start fasting before 8 pm the night before the examination. It is best to eat a mainly vegetarian diet 3 days before the examination.

2. 7 major items of blood routine

1. Do not eat greasy or high-protein food and avoid drinking large amounts of alcohol the day before blood collection. The alcohol content in the blood will directly affect the test results.

2. After 8 pm the day before the physical examination, you should start fasting for 12 hours to avoid affecting the test results.

3. Relax when having blood drawn to avoid blood vessel contraction due to fear, which will increase the difficulty of blood collection.

4. After drawing blood, apply local pressure on the needle hole for 3-5 minutes to stop the bleeding. Note: Do not rub to avoid causing subcutaneous hematoma.

5. The pressing time should be sufficient. The clotting time varies from person to person, and some people need a little longer to clot. Therefore, if you stop applying pressure immediately when the surface of the skin seems to be not bleeding, the bleeding may not stop completely, and the blood may seep into the subcutaneous layer, causing bruises. Therefore, pressing for a longer time can completely stop the bleeding. If there is a tendency of bleeding, the pressing time should be prolonged.

6. If you experience symptoms of needle phobia such as dizziness, blurred vision, fatigue, etc. after blood drawing, you should lie down immediately and drink a small amount of sugar water, and then have a physical examination after the symptoms are relieved.

7. If local bruising occurs, apply a warm towel for wet compress after 24 hours to promote absorption.