Tube color- Plasma samples may require both anticoagulants and preservatives. If multiple samples are required, remove the first collection tube from its holder as soon as blood flow is interrupted, turn the first tube upside down to prevent clotting, and gently insert the second tube into the holder. The blood smear (commonly known as a blood smear) can be an important part of clinical testing. As hemolysis affects many procedures, please submit samples that are as free of hemolysis as possible.
To ensure sample integrity in warm weather, follow these instructions for frozen gel packs and sample closure Vacutainer tubes are covered with a color-coded plastic cap that indicates which additives the tube contains.
What is the order of drawing by tube color?
If only a routine coagulation test is the only test ordered, a single light blue top tube may be drawn. You must examine the tubes at your facility to determine which products are being used for which test. When placing tubes not listed here, it should be borne in mind that their additive may alter the results of the next tube in the event of carryover. Smaller collection tubes for sample sizes of 2 ml or less may be appropriate in situations where a smaller amount of blood must be drawn, such as from pediatric patients, to minimize hemolysis during collection or to prevent insufficient sample volume in the collection tube.
If there is concern about contamination from tissue fluids or thromboplastins, a non-additive tube can be drawn first and then the light blue top tube.
What does the Purple Top blood test mean?
Venous glucose results are generally more accurate than fingerprick capillary blood sugar tests, particularly for patients with hyperglycemia, but it may take a while before they return from the lab. It has a special label that must be carefully filled out by hand at the bedside to ensure that the correct patient data is used to prevent potentially disastrous, mismatched blood transfusions. There are numerous coagulation factors (factor VIII, factor IX, etc.) that are involved in blood coagulation. Blue blood bottles contain buffered sodium citrate, which acts as a reversible anticoagulant by binding to calcium ions in the blood and then interrupting the coagulation cascade.