Dielectric sensing for blood characterization

A method, comprising:

• providing an input radio frequency (RF) signal to a dielectric microsensor that includes a blood sample under test (SUT) disposed therein;
• receiving an output RF signal from the dielectric microsensor in response to the input RF signal, the RF output signal representing a measure of impedance of the dielectric microsensor;
• calculating dielectric permittivity values of the blood sample over a measurement time interval based on the output RF signal;
• and
• analyzing the dielectric permittivity values of the blood sample over at least a portion of the measurement time interval to determine an indication of platelet count for the blood sample.

A system, comprising:

• a sensor interface comprising an input and an output, the output to connect to an input of a sensing apparatus and the input to connect to an output of the sensing apparatus, the sensing apparatus to receive a blood sample;
• a transmitter to provide an input radio frequency (RF) signal to the output of the sensor interface;
• and
• a receiver to receive an output RF signal from the input of the sensor interface in response to the input RF signal and based on an impedance of the sensor apparatus;
• a computing device to compute dielectric permittivity values of the blood sample that vary over a time interval based on the output RF signal, the computing device to determine an indication of platelet count for the blood sample based on the dielectric permittivity values computed over at least a portion of the time interval.