however, the high ptt result, which was at the upper end of the therapeutic range for ufh at our institution (75-108 seconds, corresponding to anti-xa levels of 0.3-0.7 u/ml), was alarming during this life-threatening bleeding episode, caused confusion about the validity of the result, ...
5.The prolonged response of the PTT across the UFH therapeutic range is linear and is influenced by the type of reagent.For patients receiving unfractionated heparin, the PTT results, the reference interval, and the UFH therapeutic range are all reported. Limitations of the PTT Sample quality pro...