Urinary methylmalonic acid test may have greater value than the total homocysteine assay for screening elderly individuals for cobalamin deficiency.
Norman
Eric J
EJ
D000368:Aged; D006710:Homocysteine / Q000097:blood*; D006801:Humans; D008764:Methylmalonic Acid / Q000652:urine*; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
D006710:Homocysteine; D008764:Methylmalonic Acid