Clinical Pharmacokinetics of Oral Contraceptive Steroids

@article{Orme1983ClinicalPO,
  title={Clinical Pharmacokinetics of Oral Contraceptive Steroids},
  author={M. L' E. Orme and David Back and Alasdair M. Breckenridge},
  journal={Clinical Pharmacokinetics},
  year={1983},
  volume={8},
  pages={95-136}
}
SummaryOral contraceptive steroids are of 2 types: oestrogens, of which ethinyloestradiol is the most important, and progestagens, of which levonorgestrel and norethisterone are the most commonly used. All these steroids can be measured by a number of analytical techniques but there is little doubt that radioimmunoassay is the most convenient. All the steroids are well absorbed in humans but while levonorgestrel is completely bioavailable, norethisterone has an average bioavailability of 70… Expand
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