After statistical analysis, lymphocyte count (p = 0.0038) correlated positively and NLR (p = 0.04682) correlated negatively with TSH level in COVID-19 patients, and PLT correlated positively with TSH level in the female population (p = 0.0384), while CRP (p = 0.81320), D-dimers (p = 0.974), WBC (p = 0.6862), Lymphocyte percentage (p = 0.1838), and procalcitonin (p = 0.906) did not reach statistical significance. Here, CRP is linked to COVID-19.