Breaking the Rh Code Immunohematology Review 449
SEE THINK EXAMPLE(S)
r before h “big” rh’ = C
h before r “little” hr’ = c
R presence of D Rh 1 = DCe
r absence of D rh’ = dCe
1 or ’ C Rh 1 = DCe
(if no 1 or ’, then c) rh’ = dCe
Rh 0 = Dce
2 or ” E Rh 2 = DcE
(if no 2 or ”, then e) rh” = dcE
Rh 0 = Dce
0 c + e Rh 0 = Dce
Z or y C + E rhy= dCE
Notes: Italics & superscripts denote genes, e.g., Rh’.
Standard type is used for agglutinogens (antigens).
Subscripts are used with R, e.g., Rho.
Superscripts are used with r, e.g., rh’.
The h’s are left out in shorthand notation, e.g., Rho = Ro.