A Master thesis titled The Cavity Perturbation Method for Evaluating Hematocrit Via Dielectric Propertieswas defended at College of Science, Department of القسم on )30/10/2023), for the postgraduate Candidate  Abdullah Kamel Abdulla Abbas. The aim of the thesis is The study aims to use the Cavity Perturbation technique to measure the complex permittivity of blood at microwave frequencies. The study recommended applying this technique for its accuracy, speed, and low cost.