What are the precautions before blood test

The so-called blood test is actually a routine blood test. This test can diagnose a variety of diseases and can also determine whether you are pregnant. When doing a routine blood test, liver function can be checked, and many hepatitis patients are discovered through routine blood tests. Blood tests can also check blood sugar levels, so they have certain reference value for diabetes. Here are some things to note before having a blood test.

It is not advisable to exercise too much, as exercise can cause changes in blood chemistry. Even mild exercise can cause blood sugar levels to rise, while strenuous exercise can significantly affect the body's metabolism and the release of intracellular enzymes. For example, serum creatine kinase and transaminase are important indicators for diagnosing myocardial infarction and hepatitis, respectively. For people who do not exercise regularly, their serum creatine kinase and transaminase values ​​will increase significantly if they exercise excessively.

After exercise, serum creatine kinase can increase by 1 times, while transaminase can still be around 40% high one hour after exercise stops. In order to reduce the impact of exercise on test results, it is generally recommended to avoid strenuous exercise and training as much as possible within 2 days before the test. Patients who rush to the outpatient clinic in the morning are advised to rest for 15 to 20 minutes before having their blood drawn. Choose the blood collection site. Blood testing requires blood collection first. The most common ways of collecting blood for laboratory tests are peripheral blood (earlobe or fingertip blood) and venous blood. "Fasting" does not just mean skipping breakfast, but it does not include "fasting water"

This is an introduction to the things to pay attention to before blood tests. It is necessary to do a blood test. Our annual routine physical examination includes a blood test, which can detect whether there is inflammation in the body, and can detect pneumonia, abscesses, infections and many other diseases. It can also detect many sexually transmitted diseases.