Bailey L B, Wagner P A, Christakis G J, Araujo P E, Appledorf H, Davis C G, Dorsey E, Dinning J S
J Am Geriatr Soc. 1980 Jun;28(6):276-8. doi: 10.1111/j.1532-5415.1980.tb00534.x.
Vitamin B12 status was evaluated in 111 noninstitutional elderly persons (age range, 60-87 years) living in an urban poverty area. The sample was predominantly black (90 subjects); the rest were Spanish Americans. Serum vitamin B12 levels were all normal (greater than 200 pg/ml) and ranged from 226 to 1200 pg/ml (mean +/- SD = 700 +/- 191 pg/ml). The findings indicate that vitamin B12 deficiency was not a problem in this elderly population.
