PLAUR and hematoma: We found no significant difference between uPAR levels in systemic blood between the first or second operation (first operation: 657 pg/L (465–2670) vs. second operation: 751 pg/L (454–2076), p = 0.065) or in hematoma fluid (first operation: 22,487 pg/L (18,740–32,915) vs. second operation: 34,786 pg/L (18,710–44,399), p = 0.13) (Fig. 5).