Blood Type Calculator

How does a Blood Type Calculator Determine Baby’s Blood Sample after Birth?

How does a Blood Type Calculator Determine Baby’s Blood Sample after Birth?

The majority of people believe that children are genetically similar to their parents. They imply that children have similar looks and behavior patterns to their parents and similar interests.

According to science, it is due to the genes or DNA that a child gets from its parents. The blood type of a baby after birth is determined by his parents’ genes and blood type.

Although it is possible to determine a newborn child’s specific blood type by a blood type calculator, a list of possible blood types can be formed by using a blood type calculator.

Based on the blood types of both parents, an interactive blood group calculator determines a baby’s blood type for the ABO system and vice versa. This article will discuss how blood type calculators help determine a baby’s blood type after birth.


How determine a Baby’s Blood Group after Birth?

The Blood Type Calculator helps you determine a child’s blood group or blood type based on the biological parents’ blood group or blood type. Before getting into details, it is critical to understand the blood Group system,


Blood Group System:

Antigens are chemicals present on RBCs’ surfaces (Red Blood Cells). ABO system antigens and the Rh system are the two most important blood groups.

The ABO blood group system:

ABO is a blood grouping system that was developed by the American

  • If A antigens cover your red cells, you have blood group A and B-antibodies.
  • If B antigens cover your red blood cells, you have blood group B and A antibodies.
  • If your red cells are covered in both A and B antigens, you have blood group AB, which means you don’t have either A or B antibodies.
  • If neither A nor B antigens cover your red cells, you have blood group O and have both A and B antibodies.


The Rhesus (Rh) system:

Along with A and B, the Rh antigen, commonly known as the D-Antigen, is another critical antigen found on red blood cells.


  • The blood is RhD (+) if the Rh antigen is present.
  • The blood is RhD (-) if the Rh antigen is not present.


How Calculator Determines Child Blood Type:

The blood type calculator works according to specific theoretical concepts. A blood type calculator determines the child’s probable blood types by imputing both parents’ blood types and applying these theories. The RH positive or negative values of the parents’ blood types must be entered.

The ABO Blood Group System:

The ABO gene determines the ABO blood group system. The blood group A, B, AB, or O is formed when a child inherits one or more A, B, or O alleles from his parents.

Allele O is a neutral allele, while alleles A and B are co-dominant. Each of the parents passes on one of their two alleles to their offspring.

For Example:

  • The A or B allele can be transferred to the baby by a mother with the blood type AB. A father who has the blood type O can only pass on the O allele to his baby.
  • If both parents have O blood, the child will also have O blood.
  • Parents of two A blood groups can give their child either an A or an O blood type.
  • Parents with two B blood groups can give their child either a B or an O blood group.
  • A parent with A and another with B will give their child to one of the four groups: A, B, AB, or O.
  • A parent with A and another with AB blood type will give their child to one of the three groups: A, B, or AB.
  • If one parent has the blood type A and the other has the blood group O, their child will have the blood group A or O.


Rhesus Blood Group System:

Landsteiner and Weiner discovered the Rhesus Blood Group System in 1940. It is made up of complex blood kinds. The Rh factor, which is linked to blood, can be positive (+) or negative (-), and the eight blood types are generated by combining this with the ABO blood system.

It is a crucial antigen present in red blood cells. Rh-Positive () or Rh Negative (-) blood types are determined by the presence or absence of a dominant Rh gene.

For Example:

  • The baby might have either an Rh-Positive () or Rh Negative (-) blood type if the parents are Rh-Positive ().
  • A child with Rh-Negative (-) blood type results from both parents having Rh-Negative (-) blood types.
  • The baby’s blood type can be Rh-Positive ( ) or Rh Negative (-) if one parent has Rh-Positive ( ) blood type and the other has Rh Negative (-) blood type (-).



A child’s blood calculator can determine the child’s common blood type. Parents should keep in mind that the blood types given by the calculator are only predictions, and the actual blood group may differ from those predicted blood types.

Therefore, consult a health care provider to determine the baby’s actual blood group.

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