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Fresh frozen plasma (FFP) is a blood product made from the liquid portion of whole blood. [3] It is used to treat conditions in which there are low blood clotting factors (INR > 1.5) or low levels of other blood proteins. [3] [1] It may also be used as the replacement fluid in plasma exchange.
Most blood banks now split the whole blood into two or more components, [18] typically red blood cells and a plasma component such as fresh frozen plasma. Platelets for transfusion can also be prepared from a unit of whole blood, whereby 4 or 5 buffy coats are pooled to produce a platelet component.
Carl Walter and W.P. Murphy Jr. introduced the plastic bag for blood collection in 1950. Replacing breakable glass bottles with durable plastic bags made from PVC allowed for the evolution of a collection system capable of safe and easy preparation of multiple blood components from a single unit of whole blood.
When red blood cell concentrates are produced from whole blood, the whole blood is first separated through centrifugation (usually between 3000 to 5000 x g). The red blood cells are denser than plasma and the other present blood cells (platelets, white blood cells) and settle at the bottom of the blood bag.
Cryoprecipitate, also called cryo for short, or Cryoprecipitate Antihemophilic factor (AHF), is a frozen blood product prepared from blood plasma. [1] To create cryoprecipitate, Plasma is slowly thawed to 1–6 °C. A cold-insoluble precipitate is formed, which is collected by centrifugation, resuspended in a small amount of residual plasma ...
A unit of donated fresh plasma. Blood plasma is a light amber-colored liquid component of blood in which blood cells are absent, but which contains proteins and other constituents of whole blood in suspension. It makes up about 55% of the body's total blood volume. [1] It is the intravascular part of extracellular fluid (all body fluid outside ...
The Baxter company manufactured blood bags without DEHP, but there was little demand for the product in the marketplace "Mean DEHP doses for both plateletpheresis techniques (18.1 and 32.3 μg/kg/day) were close to or exceeded the reference dose (RfD) of the US EPA and tolerable daily intake (TDI) value of the EU on the day of the apheresis.
Since the buffy coat is mostly composed of leukocytes, it is a useful in human medical research, especially in cases where blood is the only experimental sample. Peripheral blood mononuclear cells (PBMCs) can be extracted from the buffy coat, and can be frozen for storage, or used to conduct immunological exepriments.
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