You are probably seeing the serum separator gel. After the blood in the tube clots, they spin it to separate the clot from the remaining fluid (serum). The gel will move in between the clot and the serum so they stay separated.
to prevent your blood from clotting
A phlebotomist is responsible for drawing the blood of a patient. They must choose the proper needle, know the proper amount to be drawn, label the blood vial properly, and use caution because blood is a possible contaminant.
The nurse extracted a vial of blood from the patient for testing.
There is no such thing as arterial blood gas. When they draw blood it is drawn into a vial that has a vacuum, so it may appear that they are drawing gas, but no such gas exists. Also, when they draw blood they draw it from a vein.
1 pint is collected
Most of the time when you get your blood drawn you will notice they do so by filling up a small vial or sometimes a couple. This vial is put into a centrifuge (a machine that spins the vials very fast) to separate three main components in ones blood. Platelets, red/white blood cells, and plasma separate in the centrifuge and all can be extracted purely. A crude example of a centrifuge would be your washing machine on the spin cycle pulling the water out of your clothes. Imagine this on a smaller scale with a vial of blood. The force causes the plasma to separate.
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The volume of blood in a vial can vary, but a standard blood collection vial typically holds about 5 to 10 milliliters. Therefore, 42 vials of blood would equal approximately 210 to 420 milliliters. This amount is roughly equivalent to 0.2 to 0.4 liters of blood.
A small needle attached to a collection vial will be inserted into a vein and a small amount of blood will be withdrawn. When the vial is full, the needle and strap will be removed and a cotton ball will be taped over the injection site.
It is questionable and only the parties involved truly know the reason behind the vial of blood. They both said it was because it was showing their love for one another.
The airlock in blood infusion mast be high-volume to be dangerous for life. A small air vial will be dissolved in blood.
There are two components to the mix-o-vial: the top chamber holding water, or some other solute, and the bottom chamber holding the medication, usually in a powder. There's a rubber stopper between the two chambers, with a small needle at the bottom of the top chamber. To activate the mix-o-vial, you squeeze the top and bottom together. This pushes the needle through the rubber stopper and allows the water to drain into the bottom chamber. The vial is then vigorously shaken to dissolve the medication.