Table 1. Intra- and Inter Assay CVs of Bone Turnover Markers s-CTX and s-PINP.

s-CTX			s-PINP
Control (ng/mL)	Intra (%)	Inter (%)	Control (ng/mL)	Intra (%)	Inter (%)
0.39	3.1	9.1	41	3.3	3.0
0.62	3.7	4.9	98	3.4	6.2
1.43	8.5	8.0	130	4.0	5.2

s-CTX, serum C-terminal telopeptide of type I collagen; s-PINP, serum procollagen type I N-terminal propeptide.