Abstract: Objective To investigate the changes of blood test indexes in patients with severe acute respiratory syndrome (SARS) after 10 years of rehabilitation, and to evaluate the effects of SARS on blood system. Methods Twentyfive cases of SARS confirmed in our hospital (SARS group) and 25 healthy personnel (control group) were included in this study. Values of blood routine test, liver and kidney function, blood lipids, blood glucose, thyroid function, tumor marker and T cell subset index were compared between two groups. Results The serum level of calcium was higher in SARS group than that of control group (mmol/L: 2.32±0.08 vs. 2.29±0.08， t=2.072， P＜ 0.05). The level of thyroxine was also higher in SARS group than that of control group (nmol/L: 119.95 ± 29.09 vs. 96.39 ± 14.26, t=3.681， P＜ 0.05), but the results were in the normal range, there was no clinical significance. The level of neuron specific enolase (NSE) was higher in SARS group than that of control group (μg/L, 10.368±3.684 vs. 3.282±1.828, t=9.012, P＜ 0.05), in which only 2 cases were slightly higher than the normal range, but did not exceed more than 1 times of the normal value. The imaging was only part of the old change, and there was no clinical significance. There were no significant differences in other results between two groups. Conclusion Virus of SARS cause no long-term effects on blood system, liver and kidney function, thyroid function and immunity in patients with SARS, and do not increase the probability of cancer.

Key words: severe acute respiratory syndrome, laboratory examination, thyroxine, neuron-specific enolase