Health professional will wrap an elastic band around the upper arm to slow the blood flow for a blood test.
When blood is drawn for any reason a health professional will wrap an elastic band around the upper arm to slow the blood flow. This makes the vein enlarge and will be much easier to inject with a needle. Then they will clean the site with alcohol. After inserting the needle into the vein a tube will be attached which will fill with blood. When enough blood has been drawn they use a cotton gauze to apply direct pressure to the site.
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Location: Chicago Illinois USA
Photo credit: © Custom Medical Stock Photo / Alamy / Afripics
License: Royalty Free
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