Once the needle is withdrawn, you'll be asked to apply gentle pressure with a piece of gauze or bandage to the place where the needle was inserted. This helps stop bleeding. It also helps prevent swelling and bruising.
Most of the time, you can remove the pressure after a minute or two. You may want to keep a bandage on for a few hours.
Usually, you don't need to do anything else after a blood test. Results can take anywhere from a few minutes to a few weeks to come back. Your doctor should get the results. It's important that you follow up with your doctor to discuss your test results.
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