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Table. 1.

Table. 1.

Reference intervals of CYFRA 21-1 according to sex and age

Subjects N (%) Median value (ng/mL) Lower reference limit* (90% CI, ng/mL) Upper reference limit* (90% CI, ng/mL)
Total 4,096 (100.0) 1.49 0.66 (0.63–0.67) 3.84 (3.71–4.02)
Sex
Men 2,180 (53.2) 1.56 0.68 (0.67–0.70) 4.09 (3.83–4.28)
Women 1,916 (46.8) 1.41 0.60 (0.58–0.64) 3.62 (3.46–3.81)
Age (yr)
20–40 1,228 (30.0) 1.32 0.62 (0.56–0.65) 3.28 (3.17–3.41)
41–50 1,840 (44.9) 1.46 0.64 (0.60–0.68) 3.72 (3.58–3.85)
51–60 850 (20.8) 1.71 0.74 (0.68–0.81) 4.36 (4.02–4.74)
> 60 178 (4.3) 2.02 0.96 (0.74–1.01) 5.00 (4.47–6.13)

*Lower and upper reference limits are the 2.5th and 97.5th percentiles, respectively.

Abbreviations: CI, confidence interval; N, number.

© Ann Lab Med