anachemlab

• laboratory tests requiring whole blood or plasma must be collected into tubes or bottles containing anticoagulants to prevent coagulation (clotting) while laboratory tests requiring serum must be collected ina plain test tube without additives to follow coagulation or clotting of the blood.
• Plasma is a pale yellow liquid portion formed after centrifugation or standing for a time of blood collected in tubes with additive
• serum is a pale yellow liquid portion formed after centrifugation or long standing of clotted blood
• order of draw - refers to the specific order that must be followed by a phlebotomist when collecting a blood samples to prevent cross contamination, especially when dealing with multiple collection tubes. not following the prescribed sequence affects the test results due to cross contamination and interference in testing caused by carryover of additives in tubes
• Red tube top - no additive
• orange tube top - coagulant
• yellow tube top - coagulant with separation gel
• green tube top - heparin sodium
• light green tube top - heparin lithium
• purple tube top - edta coagulant
• light blue tube top - sodium citrate 1:9
• black tube top - sodium citrate 1:4
• gray tube tup - potassium oxalate, monohydrate and sodium fluoride
• red tube top - clinical chemistry, blood bank, drug levels
• orange tube top - clinical chemistry, chemical testing
• yellow tube top -clinical chemistry
• green and light green tube tops - blood gases, heparin, electrolites
• purple tube top - complete blood count, white blood cell, red blood cell, platelet count, hemoglobin, hematocrit, and blood glucose
• light blue and black tube top - prothombin time and partial thromboplastin time
• gray tube top- glucose testing
• edta - ethylenediamine tetra-acetic acid
• Stop - sps (sodium polyanethole sulfonate) - 8 to 10 times

  Light - light blue or citrate tube - 3 to 4 times

  Red - plain tube - 5 times

  Stay - sst (serum separator tube) (yellow) - 5 times

  Put - plasma separator (light green) - 8 to 10 times

  Green - heparin tube - 8 to 10 times

  Light - lavender or edta - 8 to 10 times

  Go - glucose testing if has sodium fluoride (gray) - 8 to 10 times