plasma propranolol levels before assessment varied from 5 to 121 ng/ml , and there were positive correlations between them and percentage reduction in exercise ( r = 0.78 , p less than 0.001 ) and resting ( r = 0.61 , n = 14 , p less than 0.05 ) heart rates , percentage reduction in sitting pulse rate ( r = 0.73 , p less than 0.001 ) , and the percentage reduction in serum t3 ( r = 0.59 , n = 23 , p less than 0.01 ) .
C0032105
plasma
C0229671
serum