Background/Case Studies: ABORh typing and antibody detection are standard components of first-trimester prenatal care. However, when testing is outsourced to reference laboratories, critical antibody findings may be underreported or overlooked, especially in antibody positive patients. This case illustrates the clinical impact of delayed antibody identification and the importance of sensitive testing methodologies and provider awareness.
Study
Design/Methods: A retrospective review of a single patient’s prenatal course, laboratory results, and clinical interventions was conducted. The case describes a prenatal patient with clinically significant alloantibodies and highlights gaps in communication and testing sensitivity.
Results/Findings: A 42-year-old pregnant patient with a complex medical history underwent routine prenatal testing through an IVF clinic and later an OBGYN office. Initial antibody screens were reported as positive but inconclusive by a reference lab using column agglutination. Despite the patient’s known genotype (c and E antigen negative), her concerns were initially dismissed due to Rh positivity. Repeated testing failed to identify specific antibodies until the third trimester, when anti-c was confirmed. Later testing at the delivery hospital identified both anti-c and anti-E. The patient developed anemia (Hb 8.4 g/dL) and required iron infusions. At delivery, she experienced significant blood loss and required transfusion. The newborn had a positive DAT and mild jaundice but recovered without complications. Table 1 shows the evolution of testing results and interventions during and after pregnancy. Conclusions: This case underscores the need for heightened clinical awareness of non-D alloantibodies and the limitations of standard column-based testing. Delayed identification of clinically significant antibodies can impact maternal and neonatal outcomes. Employing more sensitive testing platforms and improving communication between laboratories and providers are essential for optimal prenatal care.
