Vasopressin and Oxytocin

摘要: The chapter discusses the methods that are suited to assay of oxytocin and two vasopressins. For a quantitative determination neurohypophyseal hormones, bioassay is method choice. Some bioassays characterized by very high precision, others higher sensitivity specificity. activity hormones expressed in international units when Third International Standard for oxytocic, vasopressor, antidiuretic substances used. Although work on radioimmunoassays vasopressin still its infancy, it already possible use these determine post-hypophyseal plasma other biological fluids. presently available not necessarily most sensitive techniques sometimes even less than bioassays. However, likely improvement will near future put more specific assays at disposal biologist clinician alike.