RT Journal Article
SR Electronic
T1 Masked macrocytosis and the use of serum vitamin B<sub>12</sub> and folate assays
JF Cleveland Clinic Journal of Medicine
JO Cleve Clin J Med
FD Cleveland Clinic
SP 439
OP 444
VO 50
IS 4
A1 Savage, Richard A.
A1 Green, Ralph
YR 1983
UL http://www.ccjm.org/content/50/4/439.abstract
AB A case of "masked" macrocytosis in an iron and folate deficient male alcoholic is presented. Reliance on algorithms based on mean corpuscular volume (MCV) values for decision-making in the workup of anemic patients may, occasionally, produce diagnostic difficulties, and combination deficiencies or concomitant disease states may affect test interpretation. Appropriate use of radioisotopic dilution assays for vitamin B12 and folate depends on careful clinical observation, blood count, and screening examination of the peripheral smear before confirmatory tests are ordered.