Plasma fibrinogen levels were estimated in 56 patients of stroke, admitted in the hospital within 24 hours of symptoms. The levels were found to be raised significantly (531.73 +/- 74 mg%) compared to those of the age and sex matched control group (445.78 +/- 92.28 mg%). When the levels in stroke group with one risk factor were compared to those of individuals with comparable control group with same risk factor, a significant difference was observed in hypertensive, smokers, alcoholics and atherosclerotic stroke groups, which indicates that the observed rise is related to phenomenon of stroke rather than the associated risk factors. However, the rise observed in hypertensive stroke group (554.26 +/- 47.08 mg%) is significantly more (p. less than 0.01) than that occurring for nonhypertensive stroke group (497.82 +/- 93.12 mg%) indicating that the presence of hypertension does contribute to the rise.