QUESTIONS WITH CORRECT ANSWERS.
3 situations when the antibody may appear - CORRECT ANSWER✅✅1. Transfusion
2. Preganancy
3. Transplantation
A gene codes for the production of - CORRECT ANSWER✅✅n-acetyl galactosaminyl transferase
A prerequisite for A and B antigen to attach in the RBC - CORRECT ANSWER✅✅H antigen
A rare phenotype in which patient lacks H antigen - CORRECT ANSWER✅✅Bombay Phenotype (Oh)
ABO antibodies develop around - CORRECT ANSWER✅✅3-6 months of age
ABO antibodies include - CORRECT ANSWER✅✅Anti-A, Anti-B, Anti-AB
ABO antigen develop as early as - CORRECT ANSWER✅✅37th day of fetal life
Acquired or specific immunity - CORRECT ANSWER✅✅adaptive immunity
Additional procedures for antibody identification - CORRECT ANSWER✅✅1. Enzyme treatment
2. Inhibition/Neutralization
3. Direct Antiglobulin Test (DAT)
4. Elution
5. Adsorption
,Anti-I is neutralized by - CORRECT ANSWER✅✅Human breast milk
Anti-P1 is neutralized by - CORRECT ANSWER✅✅hydatid cyst fluid, pigeon droppings, turtledove's egg
whites
Antibodies are found in - CORRECT ANSWER✅✅serum/plasma
Antibody identification have the same first 3 steps as antibody screening. What additional step is done
in antibody identification? - CORRECT ANSWER✅✅Coomb's Check Cells
Antibody identification have the same first 3 steps as antibody screening. What additional step is done
in antibody identification? - CORRECT ANSWER✅✅Coomb's Check Cells
Antibody identification is used in order to - CORRECT ANSWER✅✅identify the antibody that caused a
positive screen
Antibody identification is used in order to - CORRECT ANSWER✅✅identify the antibody that caused a
positive screen
Antibody screening is done three phases: - CORRECT ANSWER✅✅1. Intermediate spin
2. 37°C with enhancement media
3. AHG phase
Antibody screening is done three phases: - CORRECT ANSWER✅✅1. Intermediate spin
2. 37°C with enhancement media
3. AHG phase
Antigens are found in - CORRECT ANSWER✅✅red blood cells
, Any unfavorable transfusion-related event occurring in a patient during or after transfusion of blood
components - CORRECT ANSWER✅✅Transfusion reaction
Associated with physical RBC damage, depletion and dilution of coag factors and platelets, hypothermia,
citrate toxicity, hypokalemia or hyperkalemia - CORRECT ANSWER✅✅Physically or Chemically Induced
TR
Autocontrol - CORRECT ANSWER✅✅Patient Red Cells + Patient Serum
B gene codes for the production of - CORRECT ANSWER✅✅galactosyl transferase
B-cell comprises ____% of lymphocytes - CORRECT ANSWER✅✅20-30%
Bacterial contamination in the blood bag may show - CORRECT ANSWER✅✅Clot or hemolysis or purple
or brown (murky) discoloration
Before adding AHG, do not forget to do - CORRECT ANSWER✅✅Washing (three times)
Can weak D produce anti-D? - CORRECT ANSWER✅✅Yes.
Categories of Immunity - CORRECT ANSWER✅✅Innate
Adaptive
Caused by transfusion of IgA positive blood to IgA deficient recipients who have developed Anti-IgA -
CORRECT ANSWER✅✅Anaphylactic TR
Causes of Weak D expression - CORRECT ANSWER✅✅- Genetic Weak D
- C-trans or "positional effect"
- Partial D or Mosaic D