منابع مشابه
Control of oral anticoagulant treatment by chromogenic prothrombin assay.
Doses of oral anticoagulants in 50 patients on long term treatment were easily and satisfactorily monitored over six months by an automated chromogenic assay of prothrombin (CPA). It is suggested that chromogenic assay of one or more of the vitamin K dependent coagulation factors would provide a readily standardised alternative to those conventional tests which depend on human brain derived rea...
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A chromogenic factor IX assay is developed which requires only two timedependent steps. Diluted plasma is mixed with a reagent containing factors VIII and X. The reaction is started by addition of a reagent containing factor XI", thrombin, CaCl2, and phospholipids. Then factor XIu activates factor IX if present, thrombin activates factor VIII, and subsequently the complete factor X activating c...
متن کاملBiological Activity Analysis of Native and Recombinant Streptokinase Using Clot Lysis and Chromogenic Substrate Assay
Determination of streptokinase activity is usually accomplished through two assay methods: a) Clot lysis, b) Chromogenic substrate assay. In this study the biological activity of two streptokinase products, namely Streptase®, which is a native product and Heberkinasa®, which is a recombinant product, was determined against the third international reference standard using the two forementioned a...
متن کاملSingle-step, chromogenic Limulus amebocyte lysate assay for endotoxin.
A new reagent for the chromogenic Limulus amebocyte lysate (LAL) assay is described. LAL was formulated for optimal performance in either an endpoint procedure or a kinetic procedure with the chromogenic substrate, buffer, and LAL components colyophilized as a single reagent. The kinetic chromogenic method required an incubating microplate reader coupled to a computer for collection and analysi...
متن کاملA new chromogenic assay for the specific determination of prothrombin.
A new method for the specific assay of prothrombin is described which utilises Taipan snake venom and the chromogenic substrate Tos-Gly-Pro-Arg-pNA (Chromozym TH). The method is sensitive and reproducible and shows good correlation with a conventional specific assay for prothrombin. The reaction is dependent on calcium ions and phospholipid, and is therefore sensitive to the coumarin-induced pr...
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ژورنال
عنوان ژورنال: Japanese Journal of Thrombosis and Hemostasis
سال: 2022
ISSN: ['0915-7441', '1880-8808']
DOI: https://doi.org/10.2491/jjsth.33.75