Create an account
"Becuase Better Specimens Generate Perfect Goals".
This is a phrase used to help students and Phlebotomist remember the "Order of draw".
Blood Cultures = Because
Blue top = Better
Speckled top = Specimens
Green top = Generate
Purple top = Perfect
Grey top = Goals
Each tube contains an additive.
Additives are chemicals inside the tubes that when mixed with blood cause a specific reaction required for testing and lab work.
What is the purpose of a blood culture?
Answer: A blood culture is to identify the bug and what it is sensitive to.
What is the purpose of the additive, charcoal?
Answer: If the patient is on antibiotics that will disrupt the curing process and can negatively effect the result of the test. The Charcoal kills off the antibiotics.
What does the additive prevent?
Answer: Sodium Citrate prevents clotting and stops fiberinogen (hair-like fibers)
Why would we not hesitate to retrieve the sample after it has taken a spin in the centrifuge?
Answer: Because the specimen will start projecting false - positives.
Should we spin the speckled tube before or after the clotting process has taken place?
Answer: After the 30-45 minutes are complete and the specimen has clotted
What is the purpose of the additive lithium heparin?
Answer: Lithium heparin catches the enzymes in the blood and prevent clotting.
Why is the Green top a STAT spin?
Answer: Because the majority of the test run out of a green tube have to do with the heart. The heart is always a STAT.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together