... top tube contains an additive called ethylenediaminetetraacetic acid (EDTA), or potassium salt. This tube is used for full blood counts (CBC) required for blood banks, blood type screening, or blood cross-match.
Lavender or Pink
... top tube contains citrate as an additive, which is a reversible anticoagulant. This additive will dilute the blood and is used for platelet function and coagulation assays.
... top tubes contain sodium or lithium heparin and used in chemistry for plasma determination.
... top tubes are similar to the green tube in plasma determination. The difference is this tube contains lithium heparin and a gel for plasma separation.
Light Green or Green/Gray
... top tube contains potassium oxalate and sodium fluoride and used for glucose determinations.
... top tube contains sodium heparin and can also contain EDTA. It is used to analyze if there is trace metal in the blood supply.
... top tube, which contains no additives, is used to test for antibodies, or for drug testing.
... top tube contains the additive sodium polyanethol sulfonate (SPS) or acid citrate dextrose additives. This tube is used for blood bank studies, human leukocyte antigen (HLA) phenotyping, DNA, and paternity testing.
... top tube is used specifically to test for lead and is certified to have less than .01 micrograms per milliliter of lead. The tube contains EDTA as an additive.
... top tube contains EDTA with gel as an additive and is used in molecular diagnostic testing to include polymerase chain reaction (PCR) or branched DNA amplification.