. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: Anal Bioanal Chem. 2015 May 13;407(19):5615–5624. doi: 10.1007/s00216-015-8733-z

Table 1.

Vitamin D analogs tested for potential interference

Vitamin D metabolite or structural analog	Relative retention time ^a	m/z
3-epi-25(OH)D₃	1.11	383→365
3-epi-25(OH)D₂	1.12	395→377
7α-hydroxy-4-cholestene-3-one	2.78	383→365
1α-hydroxyvitamin D₃	2.25	383→365
4β-hydroxycholesterol	5.07	385→367
27-hydroxycholesterol	1.83	385→367
24(S)-hydroxycholesterol	1.47	385→367
25-hydroxycholesterol	1.62	385→367

Relative retention time is calculated relative to 25(OH)D₃ (m/z 383→365) or 25(OH)D₂ (m/z 395→377)