Open AccessNaturally occurring anti M complicating ABO grouping
Author(s) -
Safoorah Khalid,
Roelyn Dantes,
Sunu Varghese,
Imadeddin Al Hakawati
Publication year - 2011
Publication title -
indian journal of pathology and microbiology/indian journal of pathology and microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.217
H-Index - 31
eISSN - 0974-5130
pISSN - 0377-4929
DOI - 10.4103/0377-4929.77394
Subject(s) - abo blood group system , clinical significance , blood grouping , antibody , blood bank , medicine , immunology , pathology , emergency medicine
Anti M is considered a naturally occurring antibody that is usually active at temperatures below 37°C and is thus of no clinical significance. This antibody, if present in an individual, can lead to a discrepancy between forward and reverse ABO grouping and thus creates diagnostic difficulties for blood bank staff. We report a case of a 58-year-old lady who had an unexpected reaction in reverse grouping due to anti M that posed a problem for us in the interpretation of results of her blood group. We also reviewed the literature to find out the significance of such discrepancy in blood grouping.