there was a decreased peak level of heparin measured by anti-xa effect ( peak level in fhf = 0.48 +/- 0.05 u/ml and in controls = 0.69 +/- 0.04 u/ml , p less than 0.02 ) , but an increased sensitivity to heparin ( sensitivity in fhf = 0.072 +/- 0.011 sec/unit , in controls 0.033 +/- 0.003 sec/unit , p less than 0.001 ) .
C0019139
anti-xa
C0019134
heparin