@article{913561, author = {Stephen Wise and Johanna Camara and Carolyn Burdette and Grace Hahm and Federica Nalin and Adam Kuszak and Joyce Merkel and Ramon Durazo-Arvizu and Emma Walker and Andrew Hoofnagle and Fiona Ivison and Ralf Fischer and Jody van den Ouweland and Chung Ho and Emmet Law and Jean-Nicolas Simard and Renaud Gonthier and Brett Holmquist and Sarah Meadows and Lorna Cox and Kimberly Robyak and Michael Creer and Robert Fitzgerald and Michael Clarke and Norma Breen and Pierre Lukas and Etienne Cavalier and Christopher Sempos}, title = {Interlaboratory Comparison of 25-Hydroxyvitamin D Assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 – Part 1 Liquid Chromatography – Tandem Mass Spectrometry (LC-MS/MS) Assays – Impact of 3-epi-25-Hydroxyvitamin D3}, year = {2021}, month = {2021-08-27 04:08:00}, publisher = {Analytical and Bioanalytical Chemistry}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932139}, doi = {https://doi.org/10.1007/s00216-021-03576-1}, language = {en}, }