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âIatrogenic anemiaâ is a condition of lowered hematocrit and hemoglobin count resulting from large or frequent removal of blood samples, usually for laboratory testing. It is frequently seen in patients who are already suffering from bone marrow depression, and thus may become a comorbidity.
Pernicious anemia is a macrocytic anemia caused by vitamin B12 deficiency that is due to a lack of IF secretion by gastric mucosa. Serum methylmalonic acid and homocysteine levels are also elevated in vitamin B12 deficiency states. Folate: The term folate refers to all derivatives of folic acid.or specimens without antibodies, follow-up testing of vitamin B12 tissue deficiency by measuring methylmalonic acid (MMA) (MMAS / Methylmalonic Acid [MMA], Quantitative, Serum) and/or homocysteine (HCYSP / Homocysteine, Total, Plasma) may be indicated if the patient is symptomatic.