This is typically indicated by too slow a blood flow 6 When using a syringe

This is typically indicated by too slow a blood flow

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on the cells. This is typically indicated by too slow a blood flow. 6- When using a syringe, pull the plunger gently; if pulling too quickly exerts excess pressure well beyond that of a standardized evacuated tube and will shear the cell walls. 7- Similarly, pushing hard on the syringe plunger while transferring blood to another tube exerts a destructive level of pressure, and can also cause loss of the sample if the stopper comes off. 8- Fill tubes to correct volume; under-filling of tubes containing anticoagulant results in a higher than recommended concentration of the additive, which promotes hemolysis. Use a smaller tube for difficult draws . 9
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10 Preventing hemolysis during Specimen Collection and handling: 9- Mix additives with the specimens gently; vigorous mixing or shaking can break the cells. 10- For serum tubes without a clot activator, don’t invert— just allow the sample to clot for 30 minutes with the tube in a vertical position. 11- Don’t centrifuge specimens for longer time than necessary at a higher speed . 12- Protect the specimens during shipping; also if exposure to inappropriate temperatures and significant jarring will cause hemolysis in transit. Good look
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  • Winter '20
  • Dr. Majed Saeed
  • Hematology, Hemoglobin, specimen collection

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