title: Serum 25-hydroxyvitamin D is unaffected by multiple freeze-thaw cycles.
authors.affiliation: Division of Endocrinology, Department of Medicine, University of California, San Francisco, CA 94105, USA. dantoniucci@psg.ucsf.edu
authors.forename: Diana M
authors.initials: DM
authors.lastname: Antoniucci
authors.forename: Dennis M
authors.initials: DM
authors.lastname: Black
authors.forename: Deborah E
authors.initials: DE
authors.lastname: Sellmeyer
mesh_terms: D000328:Adult; D001800:Blood Specimen Collection; D005260:Female; D005615:Freezing; D006801:Humans; D008297:Male; D008875:Middle Aged; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood*
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D