Interest of Biofer ® Compound Used in Blédilait Follow on Milk in Infant With Latent Iron Deficiency

Inclusion Criteria: * infant between 6 and 12 months of age, * preterm infant, low birth weight infant (\< 2,5 kg), multiple pregnancy, infant from mother with close pregnancies (2 babies in 2 years), * infant with a serum ferritin value \< 12ng/ml and with a normal haemoglobin value (\> 11 g/dl), i.e. with a latent iron deficiency, * infant whose parents or legal tutors have given written informed consent, * parents or legal tutors agreeing for 4 month follow-up by the investigator, * infant for which a clinical exam has been performed, * infant with health insurance. Exclusion Criteria: * infant with serum ferritin value \< 12 ng/ml and haemoglobin value \< 11 g/dl * infant already receiving medicinal iron supplementation, * infant with acquired or congenital defect, * infant presenting a significant metabolic, organic or digestive disease able to interfere with study (including hemochromatosis) * infant with congenital and/or chromosomal malformation * infant receiving a drug susceptible, according to the investigator, to interfere with the measured study parameters * infant needing specific infant formula (hypoallergenic, without cow milk proteins) * infant in a situation that could, according to investigator, interfere with an optimal participation to the study or be a health risk