Question

What is the Fisher-Race phenotype using the following results:

Anti-C: 3+, Anti-c: 0, Anti-E: 2+, Anti-e: 2+

Answer 1

Positive results indicate the presence of the antigen, while negative results indicate the absence of the antigen on the red blood cells. It is significant to identify the presence of these antigens when selecting blood for transfusion to patients with these antibodies.
Table 1 lists the five most common Rh antigens, the Weiner nomenclature and the approximate frequency of each antigen in the Caucasian population.
Table 2 lists the most common patterns of reactions obtained and the most common genotypes.
Table 1
Table 2
Fisher-Race Wiener Caucasian %
D Rho 85 C rh’ 70 E rh’’ 30 c hr’ 80 e hr’’ 98
131EN01 Oct-05-2017

Anti-
D C E c e ++0++ ++00+ 000++ +++++ +0+++ +0++0 +00++ 0+0++ 00+++
KELL BLOOD GROUP SYSTEM
Probable Genotypes Wiener Fisher-Race
R1r CDe/cde R1R1 CDe/CDe rr cde/cde R1R2 CDe/cDE R2r cDE/cde R2R2 cDE/cDE R0r cDe/cde
r’r Cde/cde r”r cdE/cde
The most frequently encountered antibody in the Kell system is anti-K. The K (KEL1) antigen is strongly immunogenic, and anti-K is frequently found in the sera of transfused patients. A positive test indicates the presence of the K antigen, while a negative test indicates the absence of the K antigen on the red blood cells. Approximately 90% of donors are K negative. It is significant to identify the K antigen when selecting blood for transfusion to patients with anti-K.
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