Why you need fasting before your lab test ( Some tests) ?

With certain blood tests, you may be instructed to fast for up to eight hours before giving your sample. Fasting before a blood draw means you don’t eat or drink anything except water. 

Why do I have to fast before certain lab tests?

Nutrients and ingredients in the food and beverages you consume are absorbed into your bloodstream and could impact factors measured by certain tests. Fasting improves the accuracy of those tests.

Why is water okay to drink while I’m fasting?

Water hydrates your veins. Hydrated veins are easier to find. And that means easier to draw from. Drink plenty of water before having any blood test.

How long do I have to fast for a blood test?

It depends on the test. Fasting for a lab test typically lasts eight hours. Your doctor should give you any special instructions related to your tests, including fasting requirements. Always follow her or his instructions.

What types of blood tests require fasting?

Glucose testing that checks blood-sugar levels and tests that determine your cholesterol, triglycerides, and high-density lipoprotein (HDL) levels usually require fasting. Other lab tests may require fasting.

Can I eat before other types of blood tests?

If it’s a test that does not require fasting then, yes, please eat something before having your blood drawn.

Can I continue taking medications before a blood test?

Unless your doctor says otherwise, take your usual medications. If you’re taking vitamin/mineral supplements, ask whether you should continue those as well.

How soon can I eat after a blood test?

Once you’ve had your blood drawn, you can eat and drink something immediately. It’s a good idea to bring a snack. You can also schedule your blood test for the early morning, to minimize the length of time you’ll go without food.m

Where do I get my blood drawn?

We provide home Sample Collection services and at our Authorised Sample Collection Centres


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