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<blockquote data-quote="Fire Sweep Ranch" data-source="post: 1347212" data-attributes="member: 18809"><p>I have pulled THOUSANDS of tail blood samples! I used to work on the research study where the research company was trying to get, I think, Cystorelin approved (it was a cystic ovary study, dairy cattle in CA were prone to cysts). My job working for the research company was to pull blood samples on thousands of dairy cattle. I was told what dairy, and what time the string would be caught in the feeding stanchions (in CA) and my job was to show up, pull a blood sample on the entire string, and label the tubes. Needless to say, I have pulled more than I care to ever count. We NEVER used a needle and syringe, that would have been cost prohibitive! Our vacutainer tubes and needles never got dirty, but our needles had a rubber end on them, like this.</p><p><img src="http://i64.tinypic.com/2077td0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>The rubber on the end prevented the blood from dripping out, until you pushed the tube up on the needle. No blood, no mess. We could not afford cross contamination when collecting the samples. It was really quite simple; lift the tail, poke with the needle, push the tube on the needle, wait a few seconds for it to fill half full, then pull out and hand off the tube to the person to label while I move to the next cow and load the next vacutainer.</p></blockquote><p></p>
[QUOTE="Fire Sweep Ranch, post: 1347212, member: 18809"] I have pulled THOUSANDS of tail blood samples! I used to work on the research study where the research company was trying to get, I think, Cystorelin approved (it was a cystic ovary study, dairy cattle in CA were prone to cysts). My job working for the research company was to pull blood samples on thousands of dairy cattle. I was told what dairy, and what time the string would be caught in the feeding stanchions (in CA) and my job was to show up, pull a blood sample on the entire string, and label the tubes. Needless to say, I have pulled more than I care to ever count. We NEVER used a needle and syringe, that would have been cost prohibitive! Our vacutainer tubes and needles never got dirty, but our needles had a rubber end on them, like this. [img]http://i64.tinypic.com/2077td0.jpg[/img] The rubber on the end prevented the blood from dripping out, until you pushed the tube up on the needle. No blood, no mess. We could not afford cross contamination when collecting the samples. It was really quite simple; lift the tail, poke with the needle, push the tube on the needle, wait a few seconds for it to fill half full, then pull out and hand off the tube to the person to label while I move to the next cow and load the next vacutainer. [/QUOTE]
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