. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: Anal Chem. 2016 Oct 27;88(22):11123–11129. doi: 10.1021/acs.analchem.6b03220

Table 3.

Bias Assessment Using JCTLM-Recognized Reference Materials

IRMM BCR material	reference target value, pM (pg/mL)	bias, % (95% CI)
BCR 576	114 (31.1)	0.3 (0.2–0.5)^a
BCR 577	690 (188)	−0.3 (−2.4–1.8)^a
BCR 578	140 (365)	−0.9 (−4.0–2.2)^a

No significant bias when evaluated following the protocol described in NIST Special Publication 829.²⁶