This lectin binds to the H antigen
Ulex europeaus
Reagent cell 3 on an antibody screen is always which Rh haplotype
r/r
What reaction presents with fever, flank pain, and hemoglobinuria? Onset typically within 15 minutes
Acute hemolytic transfusion reaction
What is the standard hemoglobin threshold for a RBC transfusion?
<7 g/dL
A platelet transfusion is expected to increase a patient's count by how much?
20-50K
Expiration of RBCs with CDP, CPDA, AS?
21 days
35 days
42 days
Group A1 and A2 red cells can be distinguished by used of this lectin
Dolichos biflorus
Daratumumab interference is removed by treating the reagent cells with what?
DTT (Dithiothreitol)
Which tests must the blood bank run to rule out acute hemolytic transfusion reactions?
DAT, visible hemolysis check
What is the strongest indication for transfusing plasma?
Trauma patients
This blood product modification decreases the frequency of HLA alloimmunization.
Leukoreduction
Dose of irradation to the center of the unit
25 Gray (2500 rad or 25 centigray)
15 to any point
This antibody that causes mixed field agglutination resembling refractile copper pennies can be neutralized with guinea pig urine?
anti-Sd(a)
A weakly reacting panreactive panel (1+) with a negative autocontrol is an indication of what type of antibody?
High Titer Low Avidity (HTLA)
Examples include: Chido/Rogers (Ch/Rg), Sda, Cartwright, John Milton Hagen (JMH)
Which reaction leads to the highest number of fatalities?
TACO
What is a proper dose of cryo for an adult?
1 pool of five
What would you recommend for a patient with an increment of only 10K, but a CCI of 15,000?
Transfuse multiple units. Likely a large BSA. Do not need HLA matched
Success rate required on ABO testing on Proficiency Testing
100% (mostly everything else only requires 80%)
This lectin binds to the B antigen?
Bandeiraea simplicifolia
A mixture or different strengths of reactivity on a panel is an indication of what?
Multiple antibodies and/or the dosage effect
Irradiation is done to prevent which transfusion reaction?
Transfusion-associated graft vs. host disease
What is the threshold for platelet transfusion if the patient is going for neurosurgery?
100 K
What does the PRA mean?
Panel reactive antigens
Percentage of random donors who would be incompatible
Amount of WBC lefts after leukoreduction
5 x 106
Who discovered the ABO Bood Groups and in what year?
Karl Landsteiner in 1901
Which substance can neutralize anti-I?
Breast milk
The rare X-linked Chronic Granulomatous Disease is associated with this unusual red cell phenotype?
The McCleod phenotype (Kell null with weak k, Kpb & Jsb)
What TRALI mitigation strategy is used in the USA (and many other countries)?
Male only plasma
What premedications should a donor receive if they are going to donate granulocytes to get an effective dose?
Steroids and G-CSF
What are the variables in calculating a corrected count increment (CCI)?
Platelet increment
Body Surface Area
Number of platelets transfused
Minimum concentration of fibrinogen in a cryo unit?
150 mg
What 2 Disney Legos does Dr. Harrold have on the top of the cabinets in his office?
Steamboat Willie
Oswald the Lucky Rabbit