Biomaterial Database

Technical aspects of buffy coat removal from whole blood and those of platelet production from single buffy coat units. 1993

Z Rácz, and C Baróti

National Institute of Haematology, Blood Transfusion and Immunology, Budapest.

Technical aspects of buffy coat removal and those of platelet production from the buffy coat were studied using the so-called Amsterdam technique. A long stomach clamp physically separates the buffy coat from erythrocyte concentrate. A better removal of platelets and leukocytes was obtained when blood stored overnight was processed vs. fresh blood. As 71.4 +/- 16.4% of leukocytes was removed from blood stored overnight, it resulted in a mean leukocyte content of 0.84 +/- 0.52 x 10(-9) of the erythrocyte concentrate. The haematocrit of the single buffy coat units have an essential impact on platelet production from buffy coat. A haematocrit of less than 30% seems to be preferable with a volume over 100 ml. The leukocyte contamination of the platelet concentrate is less when it is produced from blood stored overnight.

UI	MeSH Term	Description	Entries
D007937	Leukapheresis	The preparation of leukocyte concentrates with the return of red cells and leukocyte-poor plasma to the donor.	Leukocytapheresis,Leukopheresis,Lymphapheresis,Lymphocytapheresis,Leukocytopheresis,Lymphocytopheresis,Lymphopheresis,Leukaphereses,Leukocytaphereses,Leukocytophereses,Leukophereses,Lymphaphereses,Lymphocytaphereses,Lymphocytophereses,Lymphophereses
D007958	Leukocyte Count	The number of WHITE BLOOD CELLS per unit volume in venous BLOOD. A differential leukocyte count measures the relative numbers of the different types of white cells.	Blood Cell Count, White,Differential Leukocyte Count,Leukocyte Count, Differential,Leukocyte Number,White Blood Cell Count,Count, Differential Leukocyte,Count, Leukocyte,Counts, Differential Leukocyte,Counts, Leukocyte,Differential Leukocyte Counts,Leukocyte Counts,Leukocyte Counts, Differential,Leukocyte Numbers,Number, Leukocyte,Numbers, Leukocyte
D010976	Platelet Count	The number of PLATELETS per unit volume in a sample of venous BLOOD.	Blood Platelet Count,Blood Platelet Number,Platelet Number,Blood Platelet Counts,Blood Platelet Numbers,Count, Blood Platelet,Count, Platelet,Counts, Blood Platelet,Counts, Platelet,Number, Blood Platelet,Number, Platelet,Numbers, Blood Platelet,Numbers, Platelet,Platelet Count, Blood,Platelet Counts,Platelet Counts, Blood,Platelet Number, Blood,Platelet Numbers,Platelet Numbers, Blood
D010983	Plateletpheresis	The preparation of platelet concentrates with the return of red cells and platelet-poor plasma to the donor.	Blood Plateletpheresis,Thrombocytapheresis,Thrombocytopheresis,Blood Plateletphereses,Plateletphereses,Plateletphereses, Blood,Plateletpheresis, Blood,Thrombocytaphereses,Thrombocytophereses
D001781	Blood Component Removal	Any procedure in which blood is withdrawn from a donor, a portion is separated and retained, at the same time the remainder is returned to the donor.	Apheresis,Pheresis,Aphereses,Blood Component Removals,Phereses,Removal, Blood Component
D001787	Blood Group Incompatibility	An antigenic mismatch between donor and recipient blood. Antibodies present in the recipient's serum may be directed against antigens in the donor product. Such a mismatch may result in a transfusion reaction in which, for example, donor blood is hemolyzed. (From Saunders Dictionary & Encyclopedia of Laboratory Medicine and Technology, 1984).	ABO Compatibility,ABO Incompatibility,Blood Group ABO Incompatibility,Blood Type Incompatibility,Rh Compatibility,Rh Incompatibility,ABO Compatibilities,ABO Incompatibilities,Blood Group Incompatibilities,Blood Type Incompatibilities,Compatibility, ABO,Compatibility, Rh,Incompatibilities, Blood Group,Incompatibility, ABO,Incompatibility, Blood Group,Incompatibility, Blood Type,Incompatibility, Rh,Rh Compatibilities,Rh Incompatibilities
D001793	Blood Preservation	The process by which blood or its components are kept viable outside of the organism from which they are derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).	Blood Preservations,Preservation, Blood,Preservations, Blood
D004906	Erythrocyte Count	The number of RED BLOOD CELLS per unit volume in a sample of venous BLOOD.	Blood Cell Count, Red,Erythrocyte Number,Red Blood Cell Count,Count, Erythrocyte,Counts, Erythrocyte,Erythrocyte Counts,Erythrocyte Numbers
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D017707	Erythrocyte Transfusion	The transfer of erythrocytes from a donor to a recipient or reinfusion to the donor.	Red Blood Cell Transfusion,Red Blood Cell Transfusions,Transfusion, Red Blood Cell,Transfusions, Red Blood Cell,Erythrocyte Transfusions,Transfusion, Erythrocyte,Transfusions, Erythrocyte