Akin, FatihYavuz, HalukBodur, SaidKiyici, Aysel2020-03-262020-03-2620141606-09972072-1315https://hdl.handle.net/20.500.12395/31278Research reports indicate that vitamin B-12 levels show racial differences, which suggests that using the reference ranges of varied populations may lead to inaccurate results. This study aimed to determine normal serum levels of vitamin B-12 among children and young people in the Konya region of Turkey. It evaluated 1,109 samples; 54 were from cord-blood and 1,055 were from healthy subjects aged 0-24 year(s), who were admitted to primary healthcare centres. The normal reference levels obtained for vitamin B-12 at 2.5-97.5 percentile (P-2.5-P-97.5) range were 127-606 pg/mL for girls, 127-576 pg/mL for boys, and 127-590 pg/mL for the entire study group. The reported reference values for vitamin B-12 in other studies were higher than the current results. Vitamin B-12 levels vary from country to country; comparisons between countries may not be valid, and normal levels for each population should be obtained.eninfo:eu-repo/semantics/closedAccessChildhoodNutritionReference rangesVitamin B-12TurkeyArticle32461562225895195WOS:000347619500009Q3