| 摘要 |
The invention provides a method, a device and a system for determining a concentration of at least one sort of polarizable or polarized magnetic labels in a fluid, the sensing surface comprising at least one sort of binding sites capable of specifically attaching to at least one sort of biological entities linked to the magnetic labels, the sensing device further comprising at least one magnetic sensor element, the sensing device further comprising first means for determining the concentration of magnetic labels attached to the binding sites and second means for determining the time of arrival of the fluid.
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