Table 2.

Calculated values for Se intake; absorption of Se, Sel, and SeMet; daily intake of Se, Sel, SeMet, and amount of Se in humans before (PK1) and after (PK2) supplementation with SeMet¹.

	All, n = 20		Males, n = 7	Females, n = 13
	PK1	PK2	PK2	PK2
Se intake,2 µg/d	107 ± 6	237 ± 8**	255 ± 11**	228 ± 11**
Se absorption, %	73 ± 1	85 ± 0.8**	86 ± 1*	85 ± 1**
Se absorbed, µg/d	79 ± 5	201 ± 7**	220 ± 10**	191 ± 8**
Sel : SeMet intake3	60:40	36:64	34:66	37:63
Sel intake, µg/d	64 ± 5	85 ± 11*	88 ± 26	84 ± 11
Sel absorption, %	57 ± 2	58 ± 3	56 ± 5	59 ± 3
Sel absorbed,4 µg/d	36	50	49	50
SeMet intake, µg/d	43 ± 5	152 ± 11**	167 ± 22**	144 ± 13**
SeMet absorption, %	97 ± 0.2	97 ± 0.2	98 ± 0.3	97 ± 0.3
SeMet absorbed, µg/d	42	148	163	140
Total body Se, mg	21 ± 1	38 ± 4**	42 ± 5*	35 ± 5*

¹Values are means ± SEM of those calculated for each participant by the model ( Figure 1 ).

*Different from PK1, P < 0.05. ** Different from PK1, P < 0.001. There were no significant differences between males and females.

²To convert g to mol, multiply by 0.0127.

³Ratio in intake of Sel-exchangeable-Se : SeMet-Se.

⁴Calculated as % absorption × SeMet (or Sel) intake.