ABSTRACT
114-male student of 1st year and 2nd year M.B.B.S [mean age 24 years], were subjected to mental stress of class test examination and the Hb percent and platelet count were analyzed. The results were compared with the results which were taking after resting period given to them. All the participants were healthy and the selection was based on their well being and consent. The mean and standard deviation of differences in between stress and rest observations for both, the Hb percent and platelet count were calculated. The results were evaluated for level of significance by 95 percent confidence interval and student's paired t-test. There was a significant increase in Hb percent [P<0.001] with 2.08 percent increment during stress and in platelet count [P<0.001] with 17.15 percent increment at the time of mental stress. Our findings were in agreement with most of workers but contradictory to some others who were of the view that the increments were due to the stress induced catecholamine only and were not depending on the type and nature of stress