ABSTRACT
OBJECTIVE@#To study the stability of tetramine in blood samples under different environment temperatures.@*METHODS@#The tetramine samples in 0.5 microg/mL concentration were stored in the environment temperature at 45 degrees C, 25 degrees C and 4 degrees C. The tetramine concentration were measured by GC-MS in 1, 3, 12, 18 and 39 days, respectively. And then the results of measurement were analyzed by SPSS software.@*RESULTS@#At 45 degrees C and 25 degrees C, the concentration of tetramine changed without distinctly in first 3 days and declined significantly from 4 days to 12 days. Thereafter it declined more slowly. At 4 degrees C, the concentration of tetramine changed without distinctly in 12 days and declined significantly from 13 days to 18 days. Thereafter it declined more slowly.@*CONCLUSION@#The concentration of tetra mine in blood samples is stable in 3 days. Thereafter it declined gradually. Temperature also influences the concentration of tetra mine.