Control compositions and methods of use for coagulation tests
First Claim
1. A control composition for a coagulation test, comprising:
- (a) plasma aggregatable particles; and
(b calcium ions and;
(c) hemoglobin.
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Accused Products
Abstract
Compositions, methods, devices and kits for use in the calibration of coagulation tests. The control compositions include particles capable of aggregating in plasma and calcium ions which, when mixed with plasma, simulate the behavior of whole blood in a coagulation test. The methods include providing calcium ions and particles capable of aggregating in plasma, combining the particles and calcium ions with plasma to form a control composition, and applying the control composition to a coagulation test. The devices include a container having at least two compartments, with one compartment including particles that promote or induce aggregation of a protein or proteins in plasma, and the other compartment includes a solution of calcium ions. The kits include a control composition including a container of calcium ions, a container of particles capable of inducing aggregation of proteins in plasma, and one or more coagulation test devices.
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Citations
42 Claims
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1. A control composition for a coagulation test, comprising:
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(a) plasma aggregatable particles; and
(b calcium ions and;
(c) hemoglobin. - View Dependent Claims (2, 3, 4, 5)
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6. A control composition for a coagulation test, comprising:
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(a) plasma aggregatable particles;
(b) a solution of calcium ions;
(c) plasma; and
(d) hemoglobin. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A control composition for a coagulation test, comprising:
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(a) a suspension of polymeric beads having charged functional groups on surfaces of said beads;
(b) a solution of calcium ions;
(c) citrated plasma; and
(d) hemoglobin. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method for evaluating a coagulation test, comprising:
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(a) providing a composition including calcium ions hemoglobin and plasma aggregatable particles;
(b) combining said calcium ions hemoglobin and said particles with plasma to form a control composition; and
(c) introducing said control composition and to said coagulation test. - View Dependent Claims (27, 28, 29, 30)
(a) providing a suspension of said particles;
(b) providing a solution of said calcium ions; and
(c) providing a hemoglobin solution and (d) combining said suspension of said particles, said hemoglobin solution and said solution of calcium ions.
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29. The method of claim 28, wherein said particles comprise polymeric beads having charged functional groups on surfaces thereof.
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30. The method of claim 21, wherein providing said composition comprises including at least one optical contrast enhancer in said composition.
- 22. The method of 21, further comprising monitoring coagulation of said control composition.
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31. A method for evaluating a coagulation test, comprising:
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(a) providing plasma aggregatable particles;
(b) providing a solution of calcium ions and a solution containing hemoglobin;
(c) combining said particles with said solution of said calcium ions and said solution containing hemoglobin;
(d) adding citrated plasma to said combined said particles and said solutions of said calcium ions and hemoglobin to form a control composition; and
(e) introducing said control composition to a coagulation test. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification