Does anyone know the phrases to help remember which tube should be used first??? any help will be appreciated!! thanks in advance!
May 31, '07
I don't know a phrase but you can rationalize it out. Red is a plain tube no additive so it wont interfere with other tubes/test. Red and Black just have a gel that also will not interfere. Then comes the anti-coagulant / blue tubes as the heparin and K- edta will effect the clotting test giving them a falsely prolonged result.The next tube will be the chemistry green and or green and black with the heparin as it is less likely to interfere with the CBC / purple tube that has the K-edta in it as we all know the "K" stands for potassium which if contaminating the chem. tubes will give a false high. I know the heparin can interfere with the CBC / purple tube but it just changes the shape of some of the cells and a good lab person can figure that one out. In chemistry the instruments just give how much it measures no interpretation needed and is more likely to be missed. There are other tubes for specialized testing but if you read the ingredients in them and know what they are for you can think it out.
NEVER TAKE BLOOD FORM ONE TUBE AND PUT INTO ANOTHER WITH THE EXCEPTION BEING YOU CAN TAKE OUT OF THE RED TUBE BUT ONLY BEFORE IT HAS TIME TO CLOT (and clotting / fibrin strands forming does not take a long time) joker
Last edit by Jokerhill on May 31, '07