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Potency and Tolerance of Calcitonin Stimulation with High Dose ...

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calcium-stimulated hCT levels were strongly correlated (Figure 1C, Spearmans’ rho = 0.758,<br />

P < 0.001). Analysis <strong>of</strong> variance revealed that sex significantly influenced the magnitude <strong>of</strong><br />

the stimulated hCT levels (P =0.008), but age, weight, height, body mass index <strong>and</strong> thyroid<br />

volume did not.<br />

Tolerability <strong>of</strong> stimulation agents<br />

Clinical side effects also are reported in Table 1. Due to a perception <strong>of</strong> more<br />

unpleasant adverse effects <strong>of</strong> pentagastrin than <strong>of</strong> calcium, all subjects receiving both (n = 42)<br />

declared a preference for the latter.<br />

Discussion<br />

Because <strong>of</strong> its relatively large sample size, rigorous exclusion <strong>of</strong> evidence <strong>of</strong> thyroid<br />

abnormality, <strong>and</strong> inclusion <strong>of</strong> calcium stimulation testing, the present study provides the most<br />

reliable <strong>and</strong> clinically relevant reference values for basal <strong>and</strong> stimulated serum hCT<br />

concentrations in healthy adults obtained to date via automated chemiluminescent assay. Our<br />

reference range for basal hCT agrees <strong>with</strong> Leboulleux et al.’s description <strong>of</strong> “normal” adult<br />

circulating hCT levels as

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