Education, Blood Group Screening, and Identification of Alloimmunization Risk among Pregnant Women as an Early Detection Strategy for Maternal–Neonatal Incompatibility at Gotong Royong Hospital, Surabaya

Yustisia Amalia (Program Studi Teknologi Bank Darah, Fakultas Ilmu Kesehatan, Universitas Dr. Soetomo)
Miftahul Khairoh (Program Studi Kebidanan, Fakultas Ilmu Kesehatan, Universitas Dr. Soetomo)
Arkha Rosyaria Badrus (Program Studi Kebidanan, Fakultas Ilmu Kesehatan, Universitas Dr. Soetomo)

Health Care : Journal of Community Service
Vol. 4 No. 2 (2026)

ABSTRACT Background: Maternal–neonatal blood group incompatibility may increase the risk of red blood cell alloimmunization and hemolytic disease of the newborn. Objective: This activity aimed to improve pregnant women’s knowledge, determine the distribution of ABO and RhD blood groups, and identify alloimmunization risk at Gotong Royong Hospital, Surabaya. Methods: The activity included education, pre-test and post-test assessments, ABO and RhD blood group testing, and interviews regarding obstetric and transfusion histories among 30 pregnant women. Results: The mean knowledge score increased from 58.3±12.1 to 84.7±8.9. Blood group O was the most common, identified in 12 participants (40.0%). Twenty-nine participants (96.7%) were RhD-positive, while one participant (3.3%) was RhD-negative. Six participants (20.0%) had at least one alloimmunization risk factor. Recommendation: Regular education and screening should be continued, followed by red blood cell antibody testing for at-risk pregnant women.