Title: Vitamin B12 Test | HealthLink BC
Headings: Vitamin B12 Test
Vitamin B12 Test
Test Overview

Content: More than one needle stick may be needed. Attach a tube to the needle to fill it with blood. Remove the band from your arm when enough blood is collected. Put a gauze pad or cotton ball over the needle site as the needle is removed. Put pressure on the site and then put on a bandage. How It Feels
The blood sample is taken from a vein in your arm. An elastic band is wrapped around your upper arm. It may feel tight. You may feel nothing at all from the needle, or you may feel a quick sting or pinch. Risks
There is very little chance of a problem from having a blood sample taken from a vein.