Introduction : Rheumatic fever (RF) is an autoimmune, multiorgan inflammatory disease. The patients develop carditis (50-78%), arthritis (35-88%), chorea (2-19%), erythema marginatum (< 6%) and subcutaneous nodules (< 1-13%). Ischemia modified albumin or cobalt binding albumin is one of new biomarker for inflammation and oxidative stress. Various previous studies indicate that acute rheumatic fever is associated with oxidative stress and inflammation. In the present study, we examined IMA, CRP, ESR and albumin levels in acute rheumatic fever.Material and method: This case control study was conductedbetween April 2017 to March 2018 in pediatrics department of Malda Medical College and Hospital. Study group composed of 42 children aged 5-18 years suffering from acute rheumatic fever diagnosed by modified jones criteria and they compared with 50 healthy age and sex match control. The IMA levels were compared among groups, and the association to acute phase reactants were investigated.Results: Values ofserumischemia modified albumin, ESR and C Reactive Protein were significantly higher in cases compared to control group (p value ≤0.001). But no significant differencewas found between values of serum albumin in cases compared to control group. Positive correlation was found between cases serum IMA and ESR, C-Reactive protein.Conclusion: Serumischemia modified albumin were significantly higher in children with acute rheumatic fever compared to control group, so IMA could be used as a biomarker in diagnosis of ARF. However, further multicenter and larger case studies are needed to provide stronger evidence.International Journal of Human and Health Sciences Vol. 05 No. 02 April’21 Page: 222-225