What should be paid attention to in blood examination, and what are the precautions for blood routin

Analysis: No special preparation is required before the blood test, and the blood biochemistry test (such as liver function, blood glucose, etc.) should be fasted 12 hours in advance.

Precautions for routine blood examination:

The part of the blood that is to be collected is cleaned, usually on the tip of the earlobe, middle finger or ring finger, and the blood is collected until the part where the blood is collected is dry. On cold days, the area can be rubbed hot before blood is collected.

You should have an empty stomach before a routine blood test, but fasting is not as simple as skipping breakfast. The night before the examination, you should avoid eating greasy food, and you should fast after 8 o'clock, if you are still eating supper at 12 o'clock, when the blood is drawn, you cannot guarantee an empty stomach. On the morning of the check-up, you should not drink any beverages including juice and milk, except for plain water.

If you want to make the test results more positive, it's best to start eating a vegetarian diet from three days before the test.

On the day of the physical examination, it is best to wear clothes with loose sleeves to facilitate the sleeves when venous blood is drawn, and the clothes should be clean to prevent pinhole infection.

After blood collection, the forearm should be straightened and the hemostatic cotton ball should be pressed tightly with the other hand for at least 5 minutes. Do not bend your elbows to stop the bleeding, and do not twist the cotton ball to avoid bruising under the skin. If there is bruising around the needle's eye, a warm compress can be applied after 24 hours. To avoid infection, do not allow the pinhole to get wet for 24 hours.

Fasting. Fasting the night before, greasy. Drink less water.

Don't eat, including water.

The precautions for routine blood examination are as follows;

Before the test: 1) Don't eat too greasy, high-protein foods and avoid heavy alcohol the day before the blood draw. The amount of alcohol in the blood can directly affect the test results.

2) After 8 p.m. on the day before the examination, you should start fasting for 12 hours so as not to affect the test result.

3) When drawing blood, you should relax your mind to avoid the constriction of blood vessels caused by fear, which will increase the difficulty of blood collection.

After the examination: (1) After the blood is drawn, local compression should be performed at the pinhole for 3-5 minutes to stop the bleeding. Note: Do not rub to avoid causing subcutaneous hematoma.

2) Compression time should be sufficient. The clotting time varies from person to person, and some people take a little longer to clot. Therefore, when the surface layer of ** seems to be not bleeding, the compression may be stopped immediately, and the blood may seep into the subcutaneous area due to incomplete hemostasis.

Therefore, it takes longer to stop the bleeding completely. If bleeding tendency, prolonged compressions.

3) If you have symptoms of dizziness, dizziness, fatigue, etc., you should lie down immediately, drink a small amount of sugar water, and then perform a physical examination after the symptoms are relieved.

4) If there is local bruising, apply a warm towel after 24 hours to wet the compress to promote absorption.

Routine blood tests are the most general and basic blood tests. Blood is made up of two parts: fluid and tangible cells, and the routine blood tests the cellular part of the blood. There are three different types of cells in blood – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets.

Disease can be judged by observing the change in quantity and morphological distribution. It is one of the common auxiliary examinations used by doctors to diagnose the condition.

Associated symptoms. Open the mouth and raise the shoulders, hemoptysis is like an injection, the joints are unfavorable, the throat is dry and hot, the tongue is yellow and black, the face is red and hot, the muscles and eyes are moving, the claws and nails are not honorable, the fetus is yellow, and the white is blue.

Trilogy test report Normal range Language description White blood cell WBC count 4--10 4---1000 Hemoglobin HGB 110--160 11 g --- 16 g Platelet PLT count 100---300 100,000---30000 Everything is normal and good The blood routine value may be different at different times of the day, and there are differences in different hospitals at the same time when the test is not on the same equipment. You can look it up after a while. Keep the report of each examination as your own physical examination file for comparison. ]

Through the blood routine examination, many diseases in the body can be detected. However, when performing a routine blood test, you need to have an empty stomach, so you can't eat after 10 o'clock in the evening before the blood draw, you can't eat or drink water on the morning of the blood test, and in order to ensure the accuracy of the blood test, don't drink alcohol within 24 hours of the blood draw, and don't eat foods with high fat content for the first three days of the blood draw. After the blood draw, the pinhole should be pressed with a cotton ball for at least five minutes, and if the pinhole is bruised, it can be relieved by applying a warm compress.

You can't eat the day before the blood is drawn, so that the detection is certain. If you experience dizziness and weakness in your limbs when your blood is drawn, you should lie flat on your back and breathe deeply. Do not use water for 24 hours after the blood is drawn, and wash the wound to prevent infection.

Generally, there is no big difference, and a little influence is inevitable.

There is no difference, the blood is circulating as a whole, if it is biochemical, it is necessary to fast and drink for 8 hours, if it is electrolytes, the blood rule is not necessary.

The precautions for blood test are as follows: 1. A few days before the blood test, you must be careful not to drink alcohol, as drinking alcohol will affect the test results of liver function. In addition, do not eat foods with high sugar content, sugary drinks, high-fat foods and high-purine foods, so as not to affect the test results of blood sugar and blood lipids.

2. Fasting is required on the day of blood testing. The night before the blood draw, be sure to eat a light diet and try not to eat or drink water after 8 p.m. the night before. 3. When taking blood for testing, you must pay attention to relaxation.

Some people have to prick again because of excessive tension, which causes blood vessels to constrict and not bleed, and they have to prick it again, which will cause more pain. 4. When the blood is drawn, pay attention to the local compression, and do not move the position of the finger when pressing, so as not to cause local vasoconstriction disorders and more blood.

Whether the blood test needs to be fasted or not needs to be judged according to the specific test item. There are many blood test items, and the main items that do not require fasting are: blood routine, coagulation function, cardiac enzymes, troponin, erythrocyte sedimentation rate, blood HCG, blood CRP, thyroid hormone, estrogen, progesterone, etc.; The main tests that require fasting include:

Fasting blood glucose, liver function, blood lipids, hepatitis indicators, syphilis, AIDS and other immunization items (if the blood sample is severe lipidemia, it may affect the test results). If you are going to a hospital or physical examination, it is recommended that you have an empty stomach if the test items are not clear.