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Lipid composition of seven APTT reagents in relation to heparin sensitivity by S. Kitchen; I. Cartwright; T. A. L. Woods; I. Jennings; F. E. Preston is a Medicine article available to read on EtoBox.

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The phospholipid content of different activated partial thromboplastin time (APTT) reagents was determined and compared to heparin sensitivity. The seven reagents included were those most widely used amongst participants of the U.K. National External Quality Assessment Scheme (NEQAS) at the time of study. Heparin sensitivity was assessed using the APTT ratios obtained by more than 300 NEQAS participants on five plasmas prepared from patients receiving unfractionated heparin. The concentrations of three neutral lipids and six phospholipids present in the seven APTT reagents were determined by high‐performance thin‐layer chromatography (HPTLC) and densitometry. Both the concentrations and the relative percentages of individual phospholipid components varied markedly between reagents. The total phospholipid concentration included a 12‐fold range from 16 to 205 μg/ml. Phosphatidylserine (PS) was completely lacking from one reagent prepared from vegetable material and ranged from 3 to 22 μg/ml in the other six reagents containing extracts from animal tissue. The concentration of phosphatidylcholine ranged from 3 to 109 μg/ml. There was no demonstrable relationship between the concentrat

Who reads Lipid composition of seven APTT reagents in relation to heparin sensitivity?

Author

S. Kitchen; I. Cartwright; T. A. L. Woods; I. Jennings; F. E. Preston

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0007-1048)

Published

1999

Language

EN

Field

Medicine (Health Sciences)