RESUMEN
In a nutritional study carried out on school children in Gezira, Central Sudan. We took blood samples from 92 randomly selected school children [50 males and 42 females] aged between 8> and 15 years. Specimens were separated by centrifugation at 3000 r/m.and sera were sent frozen at minus 20 Celsius to Leeds General Infirmary, United Kingdom. All specimens were tested for HIV and proved to negative. Over there levels of folate, vitamin B12, applying radioimmunoassay method, were measured. All children did not show vitamin B12 deficiency. Folate deficiency was found in 5.6% of children. Serum ferritin was also measured by a radioactive isotope technique in 89 children [49 males and 40 females]. The deficiency was reported in 11.2%. This study relied on laboratory findings explain nutritional deficiency in Gezira children. Some recommendations were presented to correct these health problems