“…Abdominal ultrasonography will reveal characteristic echogenic, swirling fluid and was used to assess the postoperative abdomen in 9 horses. Performing a packed cell volume analysis on the hemorrhagic abdominal fluid is not only diagnostic, but useful to try to determine actual volume of blood loss . The packed cell volume of hemoperitoneum fluid is typically lower than the peripheral blood, which is important in differentiating hemoperitoneum from a splenic sample, in which case, the value will be higher than peripheral blood.…”