Print Email Facebook Twitter Serum 25-hydroxycholecalciferol levels in women using oral contraceptives Title Serum 25-hydroxycholecalciferol levels in women using oral contraceptives Author Schreurs, W.H.P. van Rijn, H.J.M. van den Berg, H. Centraal Instituut voor Voedingsonderzoek TNO Publication year 1981 Abstract A study has been made of the serum 25-hydroxycholecalciferol (25-HCC) levels in six groups of women. Significant differences were found between the one pregnant group and the two reference groups as well as between the one pregnant group and two of the three groups using oral contraceptives. No significant differences were found between the reference groups and the ones taking oral contraceptives with oestrogenic concentrations of 0.05 mg or 0.03 mg ethinyl oestradiol for more than one year. It can therefore be concluded that in contrast with most other vitamins, the serum 25-HCC levels are not influenced by the use of oral contraceptives with different oestrogenic concentrations, even over a long period of time. Chemicals/CAS: calcifediol, 19356-17-3; ethinylestradiol plus levonorgestrel, 39366-37-5; ethinylestradiol, 57-63-6; norgestrel, 6533-00-2; Calcifediol, 19356-17-3; Carrier Proteins; Contraceptives, Oral; Hydroxycholecalciferols; Receptors, Steroid Subject CalcifediolEthinylestradiolEthinylestradiol plus levonorgestrelNorgestrelOral contraceptive agentRadioisotope25 hydroxycolecalciferol blood levelBlood and hemopoietic systemCalcifediol h 3Endocrine systemHuman cellNormal humanOral contraceptionRadioimmunoassayAdolescentAdultCalcifediolCarrier ProteinsContraceptives, OralFemaleHumanHydroxycholecalciferolsReceptors, Steroid To reference this document use: http://resolver.tudelft.nl/uuid:dae63352-adc9-4045-a7da-ec66593bfaa5 TNO identifier 228985 ISSN 0010-7824 Source Contraception, 23 (4), 399-406 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.