Introduction:

The Rh system is composed of more than 56 antigens capable of producing hemolytic disease, defined by serological methods; being the most important and therefore the largest antigens of the system, the antigens D, C, c, E and e. These antigens are located on two proteins that are expressed in the membrane of erythrocytes Rh D and RhCE.

Objective:

To determine the frequency of the C, c, E and e antigens of the Rh system in Rh negative blood donors of Hemocentro Centro Oriente Colombiano.

Methods:

A cross-sectional descriptive study that included 193 blood donors from the Hemocentro Centro Oriente Colombiano, phenotyping the antigens of the Rh system, using the gel card technique. The phenotypic frequency of the Rh antigen was calculated, in percentages and for the processing of the information, the statistical package SPSS version 21.0 was used in Spanish where all the analysis of the population data was performed. With inclusion criteria to be a voluntary blood donor and exclusion, be hemoclasified as DEL antigen, weak D and partial D.

Results:

The analyzed samples were obtained from the central tubulant of the fractionated unit of red blood cells, three phenotypes were identified with a frequency of :cde / cde95.86%, cde / cdE 3.10% and cde / Cde 1, 04%; it was evidenced that the participants come from diverse municipalities of the department of Boyacá and other regions of the country like Eastern Plains, Santander and Cundinamarca. The Rh factor and the antigens of the Rh system are highly polymorphic at the population level, given the immunological importance of the antigens of the Rh system, which are directly related to the development of post transfusion hemolytic anemia and perinatal hemolytic disease, the extended phenotyping provides greater transfusional safety and follow-up to the status of the fetus or neonate.

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