We always want to give the safest, quickest and most child-friendly blood drawing services in our outpatient lab. Every child who needs blood drawn should go to the lab. A lab technician (tech) takes a look at both arms to feel and find a vein to poke. They are highly trained in drawing blood in children.
How does a lab tech find a vein?
The tech will look first then feel. A stretchy band is placed at the top of the arm to make the veins easy to feel. It feels like a tight squeeze and may pinch your arm skin a little bit. If the tech can feel a vein, the skin is cleaned with an alcohol wipe and then a needle is poked in the skin (into the vein). The feeling is like a “pinch” when the needle first breaks the skin. Buzzy Bee or numbing cream can help make that feeling much less. Once there is blood in the tubing, the tech starts to fill a syringe or different tubes. Filling the tubes usually takes less than a minute. The tech only takes a small sample of blood. Deep breathing, relaxing, and counting can help while waiting. When most of the tubes are filled, they will loosen the blue rubber band. After the needle is removed a small piece of gauze is held to the arm and a band-aid is placed.
Why does the needle miss sometimes?
Veins are tubes that move blood inside the body. Sometimes they roll away from the needle. The vein can also fall down on itself when it is poked. It will go back to normal once the needle is moved. Sometimes, veins move under the skin, the tech may move the needle to try and get into the vein. These small movements are not extra pokes and should not cause extra pain.
Can certain health conditions make it hard to see and feel veins?
Sometimes a person can have a health condition which makes it hard for blood to be drawn. If the tech does not get any blood on the first try, they might try once more, or decide that the veins are too deep or hard to poke and may ask for help. Please do not be afraid to ask any questions during this time. If you get more than one poke every time you get blood drawn, ask your provider or clinic nurse about other options.
Will it always be hard to get blood from my veins?
Growing bigger can make veins move closer to the surface and easier to feel. Drinking a lot of healthy fluids can also make veins easier to feel. Most people have their blood drawn with one poke as they get older. It is a good idea for children to have a lab tech look at both arms at every blood draw. They rarely poke a person if a vein can’t be felt. Ask as many questions as you need to during any blood draw.