Figures & data
Figure 1. The development and implementation of evidence-based clinical guidelines depends on the comparability of tests performed in research and patient care. Adopted (and modified) from CP Price and RH Christenson (eds): [Citation6].
![Figure 1. The development and implementation of evidence-based clinical guidelines depends on the comparability of tests performed in research and patient care. Adopted (and modified) from CP Price and RH Christenson (eds): [Citation6].](/cms/asset/06243c51-e6a5-48ab-af18-ffb030e9f591/iclb_a_681950_f0001_b.gif)
Table I. Overview of the elements of an SI-reference measurement system, with indication of the related tasks and responsibilities.
Table II. Recommendation for maximum imprecision (CV), bias and expanded uncertainty (U) of measurements and primary calibrators in a 25(OH)D reference measurement system [Citation41].