RH System
This antigen determines whether a person is Rh positive or Rh negative.
What is the D antigen?
This test detects antibodies coating red blood cells in vivo.
What is the Direct Antiglobulin Test (DAT)?
Lewis antigens are unique because they are acquired this way.
What is adsorption from plasma onto red blood cells?
Newborn red cells predominantly express this antigen.
What is i?
Anti-P1 is typically found in individuals with this phenotype.
What is P2?
These antigens define the Kidd blood group system.
What are Jka and Jkb?
These are the primary antigens of the Duffy system.
What are Fya and Fyb?
This high-frequency antigen is also known as Cellano
What is k?
Two Rh-positive parents can have an Rh-negative child if both parents have this genotype.
What is heterozygous (Dd)?
This test is used for antibody screening, antibody identification, and weak D testing.
What is the Indirect Antiglobulin Test (IAT)?
This Lewis phenotype indicates a secretor
What is Le(a-b+)?
Adults predominantly express this antigen.
What is I?
This substance can neutralize anti-P1.
What is hydatid cyst fluid?
Kidd antibodies are notorious for causing this type of transfusion reaction.
What is a delayed hemolytic transfusion reaction?
Individuals with the Fy(a–b–) phenotype are resistant to this parasite.
What is Plasmodium vivax?
Kell antibodies are typically this immunoglobulin class.
What is IgG?
This test is required to detect weak expression of the D antigen.
What is the indirect antiglobulin test (IAT)?
These must agglutinate after being added to all negative AHG tests to validate the test.
What are check cells (Coombs control cells)?
Lewis antibodies are usually this immunoglobulin class and react at this phase.
What is IgM at immediate spin?
Anti-I is commonly associated with this infection.
What is Mycoplasma pneumoniae?
Paroxysmal cold hemoglobinuria is associated with this antibody specificity.
What is anti-P?
Kidd antibodies typically show this phenomenon when reacting with homozygous cells.
What is dosage?
Duffy antibodies are usually detected at this phase.
What is the AHG phase?
Kell antigens are destroyed by this treatment.
What is enzyme (ficin) treatment?
R0ry in Wiener terminology corresponds to this Fisher-Race genotype.
What is Dce/dCE?
Failure to adequately wash red cells before adding AHG can cause this type of result.
What is a false negative?
Le(a+b–) individuals are typically this regarding secretor status.
What are nonsecretors?
A cold autoantibody reacting with adult cells but not cord cells suggests this specificity.
What is anti-I?
Anti-P1 is usually this immunoglobulin class and reacts at this temperature.
What is IgM at room temperature?
Enzyme treatment generally has this effect on Kidd antibodies.
What is enhancement?
Duffy antibodies are considered this in terms of clinical significance.
What is clinically significant?
Kell antibodies are considered this because they can cause HDFN and transfusion reactions.
What is clinically significant?
Write R2R2 genotype in Fisher-Race and Rosenfield terminology.
What is DcE/DcE and 1, -2, 3, 4, -5?
A positive polyspecific DAT and positive anti-IgG with negative anti-C3d indicates this.
What is IgG coating the patient’s red cells?
Lewis antibodies are generally considered this in terms of clinical significance.
What is not clinically significant?
A Benign antibody found in the serum of many normal healthy individuals.
What is Autoanti-I
Antibody produced by the rare p individuals early in life without RBC sensitization and reacts with all RBCs except those of other p individuals.
What is Anti-PP1Pk?
Kidd system antibodies may bind complement and are made in response to foreign RBC exposure during______
What is pregnancy or transfusion?
The Phenotype prevalent in Blacks but virtually nonexistent in whites
What is Fy(a-b-)?
A rare phenotype with decreased Kell system antigen expression
What is The McLeod phenotype?