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Point your arms downward, squeeze your bicep so that circulation isn't as strong and flex your arm or open your hands and veins should appear, but this won't be for very long.

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13y ago

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What is the preferred site for a blood draw?

The usual location is the inside of the elbow, where veins are near the surface and larger than the ones found in the wrist.


Why are veins the preferred choice for drawing blood samples?

Veins are the preferred choice for drawing blood samples because they are closer to the surface of the skin, making them easier to access. Additionally, veins have a larger diameter and are more elastic than arteries, which allows for a smoother and less painful blood draw process.


Why is blood taken from veins instead of arteries?

Blood is typically taken from veins instead of arteries because veins are closer to the surface of the skin and are easier to access. Veins also have lower pressure compared to arteries, making it safer and less painful to draw blood from them. Additionally, veins are less likely to spurt or cause excessive bleeding when punctured.


Can a blood clot in a varicose vein be dangerous?

Inflammation in superficial or surface veins, such as those used to insert IV lines in the arm or to draw blood, can produce pain, redness, warmth, and discomfort. Blood clots that form in superficial veins rarely break loose and travel in the blood to cause blockage (in places such as the lungs) and complications.


What gauge needle is used on a 14 year old to draw blood?

It is determined by the size of the veins


What is the process of removing blood from the veins for examination called?

This is called a veinipuncture. It can also be called a blood draw which is a more common name.


How is blood collected for procedures requiring serum?

To obtain serum for a blood test you need to use a tube without any anticoagulant. You use a needle and the tube to draw blood from a persons veins.


What unique features of veins help move blood back to the heart?

1. Valves in the veins which stop blood flowing backwards 2. As the muscles around the veins contract (from general activity eg walking) they squeeze the veins, therefore forcing blood back to the heart (in just that direction because of valves)


How do you obtain serum for testing?

To obtain serum for a blood test you need to use a tube without any anticoagulant. You use a needle and the tube to draw blood from a persons veins.


Why might it be difficult to draw blood from an elderly patient?

Drawing blood from an elderly patient can be difficult due to factors such as fragile veins, decreased blood flow, and potential health conditions that affect vein visibility and accessibility.


Which component of the blood carries oxygen?

Hemoglobin molecules on the surface of the red blood cells.


Can you draw blood from a varicose vein?

Heck yes you can! I am a medic in the army and I've done quite a few IV sticks on the veins on the top of the foot. I haven't drawn any blood from the foot but there's enough pressure down there to do so.