Figure 2.

Effect of EDTA and citrate on the TSH assay using immunofluorometric method. Mean hormone concentrations (± SD) are represented by the box; medians are plotted as a line inside the box; error bars represents 10th and 90th percentiles; dots outside box are values that falls outside the 10th and 90th percentiles; significant (*p < 0.05) differences between serum and EDTA or serum and citrate are indicated by an asterisk.

Kohek et al. BMC Clinical Pathology 2002 2:2   doi:10.1186/1472-6890-2-2
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