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Table 2 Clinical reference intervals, critical range, 5 and 95% percentiles, and the limited range

From: Design and evaluation of a LIS-based autoverification system for coagulation assays in a core clinical laboratory

  Clinical reference intervals Critical value Percentiles (5 and 95%) Limited Range
PT 11.00–14.30 s ≤ 9.00 s or  ≥  70.00 s 11.80–16.30 s 11.00–16.30 s
APTT 32.00–43.00 s ≤ 15.00 s or  ≥  100.00 s 30.40–46.40 s 30.40–46.40 s
TT 14.0 0–21.00 s > 150.00 s  15.00–19.40 s 14.00–21.00 s
FBG 2.00–4.00 g/L < 1.00 g/L 2.21–6.51 s 2.00–6.51 g/L
  1. PT Prothrombin time, APTT Activated partial thromboplastin time, TT Thrombin time, FBG Fibrinogen