Rh System

In addition to the antigens present in the ABO System , red blood cells sometimes have another antigen, a protein called the Rh factor.

Description

The Rh System is a CODED CLINICAL ENTRY.

In addition to the antigens present in the ABO System, red blood cells sometimes have another antigen, a protein called the Rh factor.

  • If the Rh factor is present, the PERSON's blood group is RhD positive;
  • If the Rh factor is absent, the PERSON is RhD negative.

This means that a PERSON can be one of eight blood groups:

  • A RhD positive (A+)
  • A RhD negative (A-)
  • B RhD positive (B+)
  • B RhD negative (B-)
  • O RhD positive (O+)
  • O RhD negative (O-)
  • AB RhD positive (AB+)
  • AB RhD negative (AB-).

For further information on the Rh System, see the NHS website at: Blood groups.

Also Known As

This NHS Business Definition is also known by these names:

Context Alias
Full name Rhesus Blood Group System