Table 2.

Reference Intervals of the Serum Hcy Level in Korean Adults According to Gender and the Assays

	ADVIA Centaur			AxSym
Reference interval (μmol/l)	Male	Female	Overall	Male	Female	Overall
≤65yrs	N=193	N=149	N=342	N=220	N=160	N=380
Percentilea	8.43–19.76	6.72–15.16	7.0–18.19	7.26–19.21	5.50–14.99	6.00–17.35
95% CIb	7.93–19.23	6.50–14.49	6.85–18.06	7.26–19.21	5.13–13.17	5.51–17.59
Total	N=198	N=152	N=350	N=279	N=174	N=453
Percentilea	8.45–19.76	6.73–15.48	7.02–18.27	7.67–20.09	5.65–15.61	5.95–19.22
95% CIb	7.97–19.18	6.73–15.48	6.87–18.11	7.67–20.09	5.03–13.89	5.59–18.62

Hcy, homocysteine; CI, confidence interval.

^{a a}2.5–97.5th percentile using the non‐parametric method.

^{b b}After logarithmic transformation.