SERPINC1 and deep vein thrombosis: Among the laboratory indicators, 7 out of 10 patients with CSE-DVT (70%) had platelet counts (PLT) >300 × 109/L (reference value: 100–300 × 109/L); all the 10 patients had activated partial thrombin time (APTT) within the normal range (25.7–39.0 seconds); all the 10 patients had elevated D-dimer, with 5 (50%) >2.00 mg/L (normal range: 0–0.55 mg/L); 4 (40%) had fibrinogen (FIB) <2.00 g/L (normal range: 2.00–4.00 g/L); and 3 (30%) had antithrombin-III (AT-III) activity <85% (normal range: 85.0%–135.0%).