ETH Zurich, Human Nutrition Laboratory
Zurich, 8092, Switzerland
NCT Number: NCT02993835
Determination of fractional iron absorption from bouillon fortified with 3 labeled iron compounds.
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Notify Me18 year–40 year
Female
Interventional
Not applicable
Zurich, 8092, Switzerland
This single center trial will be single-blind to the subject, controlled, fully randomized with crossover design in 22 healthy females aged 18-40 years old.
Subjects will attend 8 visits. At screening (V0), 3 consecutive feeding days (V1-V3), 14 days after last stable isotope intake again 3 consecutive feeding days (V4-V6), and 14 days after last stable isotope intake blood sampling (V7).
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
Fe salt enriched with Fe 54 isotopes
Fe salt enriched with Fe 57 isotopes
Fe salt enriched with Fe 58 isotopes
Time frame: 14 days after last stable isotope adminstration
FIA will be calculated based on the measured shift of iron isotope ratios in the blood 14 days after the test meal administrations. The amounts of 57Fe, 54Fe and 58Fe in the blood will be calculated on the principle of isotope dilution by considering that iron isotopic labels are not mono-isotopic (Walczyk et al., 1997; Cercamondi, 2013). Circulating iron will be calculated based on blood volume and hemoglobin concentration (Kastenmayer et al., 1994). Blood volume will be indirectly measured based on height and weight and calculated using the formula proposed by Brown et al (1962). For calculations of fractional absorption, 80% incorporation of the absorbed iron into red blood cells is assumed.
Société des Produits Nestlé (SPN)
Industry
Iron Bioavailability From Fortified Food in Healthy Women
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