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. 2017 Jan 30;31(6):e22128. doi: 10.1002/jcla.22128

Table 4.

Comparison of the manufacturer's and the present study's reference values

Manufacturer's RRs Present study's RRs Inconsistency in diagnosis
Male Female A(−) and B(+) A(+) and B(−)
R (min) 5‐10 4.2‐8.7 3.7‐9.0 27 (1.61%) 273 (16.24%)
K (min) 1‐3 1.2‐3.2 1.0‐3.2 12 (0.71%) 23 (1.37%)
α (degree) 53‐72 47.0‐72.3 48.4‐74.4 0 114 (6.78%)
MA (mm) 50‐70 49.1‐70.5 46.5‐72.4 0 57 (3.39%)

α, alpha angle; MA, maximum amplitude; K, clotting time; R, reaction time; RRs, reference ranges.

Values are presented as the P2.5th to P97.5th by the percentile method.

‘+’ indicates abnormal coagulation; ‘−’ indicates normal coagulation.

A, Manufacturer's RRs; B, present study's RRs.