Blood sampling is one of the commonly used diagnosis and treatment methods in clinical medicine. It is important to understand the precautions before the blood test, such as preparation, diet, medications, etc., to ensure the accuracy and reliability of the test results. This article will detail what to pay attention to before a blood test to help you better understand the relevant knowledge of blood tests.
What is the use of blood tests?What's in it?
Blood test refers to a method of taking a patient's blood sample and analyzing the components in the blood to assist in the diagnosis and disease analysis. There are many types of blood tests, including blood routine (white blood cells, red blood cells, platelets, etc.), biochemical tests (liver function, kidney function, blood lipids, blood glucose, cardiac enzymes, stroke, etc.), immune tests (infectious diseases HIV, hepatitis B, hepatitis C, syphilis, tumor markers, hyperthyroidism, sex hormones, autoimmunity, etc.), genetic tests (DNA, RNA), precision medicine tests (prenatal diagnosis, tumor genes, metagenes, mass spectrometry), etc. Blood tests are of great significance for the early detection, diagnosis and evaluation of diseases.
Preparation before a blood test.
Inform the doctor of medical history: Before the blood test is taken, the patient should inform the doctor of his or her medical history, including current medical history, past medical history, family history, etc., so that the doctor can formulate an appropriate diagnosis and treatment plan according to the patient's specific situation.
Comply with dietary regulations: Follow the dietary advice of your doctor or laboratory tester before taking blood tests, and avoid foods that are high in fat, sugar, and salt. Especially for laboratory tests that require fasting, fasting times should be strictly adhered to. Fasting blood draws generally refer to fasting after 10:00 p.m. Avoid strenuous exercise: Avoid strenuous exercise before the blood test to avoid affecting the test results. Take proper rest and maintain a peaceful mind.
Stopping medications: Certain medications, such as antibiotics and birth control pills, may affect the results of blood tests. Tell your doctor about the medication you're taking before you take a blood test so that you can adjust it based on how it affects your test results.
Comfortable clothing: Wear loose, comfortable clothing for blood testing to facilitate blood collection.
Precautions in blood collection and laboratory tests with blood collection: During the blood collection process, patients should cooperate with the requirements of the blood collection personnel, maintain a relaxed attitude, and avoid nervousness.
Avoid squeezing blood vessels: During blood collection, patients should avoid squeezing blood vessels so as not to affect blood circulation and blood collection effect.
Blood collection site: When collecting blood, attention should be paid to the selection of blood collection site, and blood collection should be avoided in infected or damaged parts, so as not to cause infection or affect the test results.
Special circumstances: If there is fainting needle, blood sickness, etc., the blood collector should be informed in advance so that corresponding measures can be taken to prevent accidents.
Precautions after a blood test.
Correct compression to stop bleeding: After the blood is drawn, the patient should use the correct compression method to stop the bleeding and avoid rubbing or kneading the puncture site vigorously to avoid causing subcutaneous bleeding and bruising. The correct method of compression is to apply gentle pressure with two fingers above the puncture site and hold for at least 5-10 minutes.
Avoid strenuous exercise: After blood draw, patients should avoid strenuous exercise and heavy physical exertion to avoid exacerbating bleeding tendencies. Take proper rest and maintain a peaceful mind.
Pay attention to observe the physical reaction: After the blood is drawn, the patient should pay attention to observe his physical reaction, such as dizziness, palpitations, fatigue and other symptoms, he should inform the doctor, ** or examiner in time, so that the corresponding treatment measures can be taken.
Maintain cleanliness and hygiene: After the blood is drawn, the patient should keep the puncture site clean and hygienic to avoid infection. If there is pain or bruising, cold or hot compresses can be used to relieve it.
Dietary conditioning: After blood drawing, patients should pay attention to dietary conditioning and appropriately increase the intake of nutrients, such as protein, iron, etc., to promote the recovery and health of the body. At the same time, the intake of foods high in fat, sugar, and salt should be avoided.
Follow the doctor's advice: After the blood is drawn, the patient should follow the advice of the doctor,** or the examiner, and if a follow-up or further examination is required, it should be done promptly. At the same time, the corresponding ** and nursing measures should be carried out according to the doctor's guidance.
Take care to save the test report: After the blood test is taken, the patient should take care to save the test report so that they can check and understand their health status at any time. If you have any questions or need to know more about the test results, you can consult your doctor,** or a tester. Healthy Wintering Program