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case-report | 30-November-2020

Blood group discrepancy in Ah para-Bombay phenotype: a rare blood group variant and its clinical significance

used in both phases of reverse typing. However, the strength of reactivity with group O and group A RBCs was enhanced when incubated at 4°C for 1 hour (Fig. 1B and C). The autologous control at 4°C and at RT was negative (not shown in Fig. 1). Hence, based on the results summarized in Table 1, forward typing showed a picture of Bombay/para-Bombay phenotype, and reverse typing suggested the presence of anti-B, along with the possibility of anti-H, anti-IH, or other cold-reacting antibodies in the

M.S. Bhagavathi, N. Das, S. Prakash, A. Sahu, S. Routray, S. Mukherjee

Immunohematology, Volume 37 , ISSUE 4, 160–164

case-report | 25-June-2021

Neonatal testing leading to the identification of Bh (para-Bombay) phenotype in the mother: case report with review of the literature

agglutination testing was performed to resolve the discrepancy. Antibody screening and identification showed panagglutination reactivity (Fig. 1B–D) with negative autocontrol (Bio-Rad, Hercules, CA); additional testing with anti-H lectin was negative, thus implying the mother’s blood group/type to be Oh D+. The antibody reacted strongly with cord group O RBCs (4+), similar to its reactivity with adult group O RBCs, thus ruling out anti-IH. However, we were not able to perform a complete adsorption of the

G. Mohan, A. Vaidya, S. Shastry

Immunohematology, Volume 37 , ISSUE 2, 59–63

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