Table 3.

Instrument detection limit of (IDL), method detection limit (MDL) and limit of quantification (LOQ) for anlytes given in pmol of standards injected onto the HPLC-system

	Analyte	IDL [pmol]	MDL [pmol]	LOQ [pmol]
1	13-cis RA	0.7	1.9	3.1
2	9-cis RA	0.7	2.2	4.1
3	all-trans RA	0.6	1.4	3.5
4	all-trans retinol	0.3	n/a	3.6
6	all-trans retinyl acetate	0.5	0.6	1.5
9	all-trans retinyl palmitate	0.4	0.5	0.9
11	δ – tocopherol	5.3	6.6	32.9
12	γ – tocopherol	5.4	9.3	37.8
13	α – tocopherol	8.1	8.5	34.2
15	all-trans lutein	0.9	0.8	2.4
17	all-trans lycopene	6.9	10.2	11.8
18	all-trans-β-carotene	1.4	2.7	2.9

n/a – not applicable