Terahertz spectroscopy of blood plasma as a promising method for diagnosing of thyroid cancer

Using terahertz time domain spectroscopy (THz TDS), the dielectric properties of liquid and lyophilized blood plasma of patients with thyroid nodules were studied for the first time. THz absorption and refraction were compared with the data of biochemical analysis of blood plasma; a correlation with the concentration of glucose, protein, and some tumor miRNAs were revealed. Thus, the sensitivity of THz TDS to thyroid cancer was confirmed in the frequency range from 0.05 to 1.6 THz.