摘要:
Disclosed is a method for evaluating residual platelet thrombotic potential in patients undergoing antiplatelet treatment, which comprises determination in a patient's blood sample of vasodilator-stimulated phosphoprotein phosphorylation (VASP-P) status and platelet tissue factor (TF) expression.
摘要:
This invention provides a method for determining the concentration of a factor VIIa inhibitor in a sample. A method for determining non specific binding of a factor VIIa inhibitor to proteins other than factor VIIa is also provided.
摘要:
Methods of inducing, promoting, and/or enhancing one or more physiological responses associated with the treatment and/or prevention of inflammatory arthritides and/or other inflammation-related conditions in mammals and/or mammalian tissues including delivery of an effective amount of at least one tissue factor antagonist, at least one tissue factor inhibitor, or a combination thereof to a mammal and/or mammalian tissue under conditions such that such a physiological response is induced, promoted, and/or enhanced.
摘要:
A method for manufacturing a tissue factor-based prothrombin-time reagent includes combining predetermined quantities of tissue factor (TF), phospholipid and detergent-containing buffer to create a TF/phospholipid mixture. In this combining step, the quantity of TF is predetermined based upon its measured TF activity. Next, the detergent is removed from the TF/phospholipid mixture to produce an essentially detergent-free TF/phospholipid mixture that is useful as a tissue factor-based PT reagent. The method can include the use of hydrophobic resin that has been prescreened based on phospholipid recovery to accomplish the removal of the detergent.
摘要:
A fluidic medical diagnostic device permits measurement of analyte concentration or a property of a biological fluid, particularly the coagulation time of blood. The device has at one-end a sample port for introducing a sample and at the other end a bladder for drawing the sample to a measurement area. A channel carries the sample from the sample port to the measurement area, and a stop junction, between the measurement area and bladder, halts the sample flow. The desired measurement can be made by placing the device into a meter which measures a physical property of the samplenulltypically, optical transmittancenullafter it has interacted with a reagent in the measurement area.
摘要:
A medical diagnostic device has a non-absorbent substrate that has a hydrophilic target area on which a reagent is deposited by non-impact printing of microdroplets. During deposition, the device is moved relative to the stream of microdroplets to form a substantially uniform reagent layer on the substrate. The device is particularly well adapted for measuring blood coagulation times. In a preferred embodiment, coagulation times are determined by monitoring the optical transmission of light through the target area as an applied blood sample interacts with the reagent.
摘要:
The Prothrombin Time (PT) is used as a screening test for blood coagulation factor deficiencies and for monitoring oral anti-coagulant therapy using coumadin. Thromboplastin reagents activate the extrinsic pathway of coagulation and are the basis for the Prothrombin Time (PT) test. This invention describes the use of barium sulfate and chaotropic agents, and nonionic detergents, for the extraction of sensitive thromboplastin reagents from tissue. Extraction with sodium thiocyanate alone also greatly enhances thromboplastin sensitivity. This invention should be useful for all thromboplastins and will improve their sensitivity for all PT-based tests and specific assays.
摘要:
A highly sensitive blood coagulation test reagent that enables determining and evaluating bleeding risk of direct oral anticoagulants (DOACs) and the like accurately in hemorrhagic diseases, and the like are provided. A blood coagulation test reagent containing: an active form of a blood coagulation factor XI (FXIa); and tissue factor (TF). A blood coagulation test method including a step of measuring the amount of thrombin generated by reacting a biological sample as a test specimen with a test reagent containing: 0.5 pM to 1,000 pM of an active form of a blood coagulation factor XI(FXIa); and 1 fM to 1,000 fM of tissue factor.
摘要:
Disclosed is a method for determining the severity of hemophilia, the method including the steps of: coagulating a blood specimen to acquire a coagulation waveform; acquiring an average change rate of a coagulation rate from the coagulation waveform; and determining the severity of hemophilia in the blood specimen based on the average change rate of the coagulation rate.
摘要:
Test strips for determining the activity of a coagulation factor in a blood sample are provided. The strip comprises a support, a sample inlet port for deposition of a blood sample, and a reaction area comprising a blood coagulation reagent. The sample inlet port is connected to the reaction area, and the coagulation reagent comprises blood plasma deficient in the coagulation factor for which activity is to be measured, an ionic citrate source an ionic calcium source, and either one or more coagulation contact phase activator reagents and phospholipids or a mixture of tissue factor and phospholipids. The disclosure further relates to in vitro methods for measuring an activity of a coagulation factor.