How do I know if my test requires fasting?

You can check if your test requires fasting: In the instructions included in your lab order confirmation email. By looking into the test’s “More info” section on our website. Each test has a descripti…

Should I fast for a CBC?

No. Fasting is not needed if you’re just doing a CBC. Keep in mind it’s common to have much more tests done than only a CBC. If this is your case, you’ll likely need to fast. Check your testing instru…

Can I exercise on the same day I do lab work?

Before collection: A workout can negatively impact blood test results. For the most accurate blood test results, your blood should be drawn when you're rested. After collection:upper-body In order to…

Will being sick or having a cold impact the results of my blood test?

Hello there! Firstly, we hope you feel better soon :) Yes, common cold can affect blood test results. For example, it might cause your white blood cell count to rise because your body's busy fighting…

Can blood be drawn somewhere other than the arm?

The arm and hand are standard locations for blood collection as they provide reliable access to suitable veins. Quest Diagnostics: Can only collect blood samples from your arm. LabCorp: Can collect bl…