Introduction: COVID 19 diseas caused by SARS CoV2 virus affecting many people in and around the world causing mortality and morbidity . to predict the outcome and assessing the prognosis of patients affected with COVID 19 some biomarkers are required few such markers are haematological markers which have their impact on covid 19 disease. Materials And Methods: This is a retrospective study done in the RTPCR positive covid 19 patients who are admitted in government general hospital Vijayawada during march 2022 to June 2022 with inclusion criteria as all covid 19 RTPCTR positive patients who are 18 years and above of age are included in the study and exclusion criteria as RTPCR negative and age less than 18years. A Results: s an observational study out of 100 patients 63 were males, 37 were females , majority of individuals belongs to 45 to 55years of age. 18 patients had normal complete blood picture with out any abnormalities. In the remaining patients 19 has anaemia, 52 has leucopenia ,9 has thrombocytopenia,2 has pancytopenia . Out of 100 patients 24 had elevated serum ferritin levels, 26 had elevated D-Dimer levels ,38 had elevated LDH levels. SARS patients commonly manifest Discussion: lymphopenia, thrombocytopenia,and leukopenia. During the onset of SARS, patients exhibit a reduction in peripheral CD4+ and CD8+ T lymphocytes. In the present study, we concentrated on the value of the hematological ratios as NLR, our results supported a previous study that indicated that elevated NLR predicts poor outcome in COVID-19 patients so that those with high NLR attract more attention than those with low NLR. C-reactive protein (CRP), d-dimer and ferritin, are markers that are extensively studied in COVID-19 infected victims. Conclusions: Common hematological abnormalities in COVID-19 are lymphopenia, thrombocytopenia, and elevated D-dimer and CRP levels. These alterations are signicantly more common/ prominent in patients with severe COVID-19 disease, and thus may serve as a possible biomarker for those needing hospitalization and ICU care.