Early Biochemical and Hematological Response to Intramuscular Cyanocobalamin Therapy in Vitamin B<sub>12</sub>-Deficient Patients

<b><i>Background:</i></b> Data on early biochemical and hematological responses to cobalamin therapy in vitamin B<sub>12</sub>-deficient patients are scarce. Therefore, we investigated whether cobalamin injections would include prompt biochemical and hematological responses in vitamin B<sub>12</sub>-deficient patients. <b><i>Subjects and Methods:</i></b> Seven female patients (mean age: 69.4 years, range: 61-78) with a mean serum cobalamin level of 104 ± 38 pmol/l mean ± SD and 7 male patients (mean age: 67.0 years, range: 53-78) with a mean serum cobalamin level of 84 ± 40 (±SD) participated in the study. They were adm…