Fasting For A Blood Test

Why do I need to fast before my blood test?

If your doctor has instructed you to fast before a blood test, you should not eat or drink anything other than water for some hours before the test. When you eat and drink normally, foods and beverages are absorbed into your bloodstream. This could have an impact on the outcomes of certain blood tests, says an expert of blood tests in New Town.

 

What kinds of blood tests necessitate fasting?

The following are the most typical types of blood tests that require fasting:

Glucose tests

Glucose tests are used to measure blood sugar levels. A glucose tolerance test is one type of glucose test. You must fast for 8 hours before taking this test. When you arrive at the laboratory or medical facility, you will:

• Get your blood tested

• Drink a special liquid containing glucose

• Have your blood tested again one hour, two hours or three hours later

Lipid test

Lipid tests measure triglycerides, a sort of fat found in the bloodstream, and cholesterol, a fat-like substance found in your blood and every cell of your body. Increased levels of triglycerides and LDL cholesterol, a kind of cholesterol, can put you at risk for heart disease, says the expert of the best blood test lab in New Town.

How long should I fast before the test?

Before a blood test, you should usually fast for 8-12 hours. The majority of fasting tests are scheduled for early in the morning. As a result, most of your fasting time will be spent at night.

Can I drink anything other than water while fasting?

No. Juice, soda, coffee and other beverages can enter your bloodstream and impair your blood test results. Furthermore, you should not:

• Chew gum

• Smoke

• Exercise

These activities may also impact your results, but you can stay hydrated by drinking water. Drinking water before a blood test is beneficial. It keeps more fluid in your veins, making it easier to draw blood.

Before undergoing any laboratory tests, you should consult with your doctor. Fasting or other special preparations are not required for some tests. They may require you to avoid certain foods, medications, or activities. Taking the proper precautions before testing can help ensure that your results are accurate, says the expert of the best blood tests in New Town.