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. 1998 Dec;46(6):547–551. doi: 10.1046/j.1365-2125.1998.00835.x

Figure 3.

Figure 3

Frequency distribution (%) of LTG concentrations measured in this laboratory during the initial 12 months period (open columns) and 12 months later (ie., at 24 months) (filled columns) following the introduction of a routine assay service. The laboratory quotes a ‘therapeutic range’ of 3–14 mg l−1 with all reports issued.