THE CLEARANCE OF HOMOLOGOUS CALCITONIN

in Journal of Endocrinology
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SUMMARY

The plasma clearance of calcitonin (TC) was studied by following the disappearance of radioactivity after intravenous injection of labelled TC, and the disappearance of bio-assayable activity after intravenous injection of unlabelled hormone. The turnover was shown to be rapid: two exponential components were involved with half times of 4–5 and 35–40 min. respectively. Similar values were obtained in experiments in which TC was infused to obtain raised, steady concentrations after which the disappearance of biologically active material was followed for up to 100 min. The normal concentration of TC in porcine peripheral plasma was calculated to be about 9 μu./ml.

 

      Society for Endocrinology

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