IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-3-34178 Original Research Paper To Study Levels of Fibrinogen, D-dimer and IL-6 levels in patients of COVID 19 and their co-relation in severe vs mild cases of Covid 19 Rishabh Rastogi Dr. Dr Mukti Bhatnagar Dr. March 2021 10 3 01 02