title: Simple method for extracting vitamin D metabolites from biological samples.
mesh_terms: D000097:Acetonitriles; D000818:Animals; D001842:Bone and Bones / Q000032:analysis; D004285:Dogs; D007668:Kidney / Q000032:analysis; D051381:Rats; D014807:Vitamin D / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D000097:Acetonitriles; D014807:Vitamin D; C032159:acetonitrile