Blood specimens must be collected within how many days for pretransfusion testing?
What is 3
100
The test that detects in vivo sensitization of red cells
What is the DAT
100
Pentamer, 10 antigen binding sites, does not cross the placenta
What is IgM
100
In tube agglutination grading, a solid clump is graded as
What is 4+
100
A serologic check for compatibility between donor and recipient
What is the crossmatch
200
In tube agglutination, several large clumps with a clear background is graded as
What is 3+
200
The optimal cell suspension concentration for blood bank tube testing
What is 3% (2-5%)
200
Nonsecretors have which ABO antigen substances detectable in their secretions?
What is none
200
A specimen would give a false positive weak D test if it also had a positive result for this test.
What is DAT
200
Reagent that detects the presence of IgG antibody
What is monospecific anti-IgG
300
To avoid potential complement binding in vitro, blood bank samples should be collected with this additive
What is EDTA
300
An antibody that is able to directly agglutinate antigens suspended in saline without the addition of any enhancement media is said to be this type of agglutinin.
What is Saline agglutinin
300
A group B secretor has what substance(s) detectable in their secretions.
What is H and B antigen substance
300
The majority of HLA antibodies belong to this immunoglobulin class
What is IgG
300
Inadequate washing of an antiglobulin test can result in
____________ of the AHG reagent
What is neutralization
400
The precursor substance for the A and B antigens
What is H
400
A antigen on the red cell
Anti-B in the serum
What is Group A
400
In tube agglutination grading, small to medium clumps with a clear background is graded as
What is 2+
400
Used to treat fibrinogen deficiency
What is Cryoprecipitate
400
The shelf life of AS-1 red cells
What is 42 days
500
Red cell storage temperature
What is 1-6 deg C
500
Coughing, cyanosis, difficulty breathing as a result of transfusion. Common in children and elderly, especially after transfusion of large amounts of blood / blood product
What is Circulatory overload
500
The expected platelet count increment after transfusion of 1 platelet pheresis to a 70 kg individual
What is 30,000 to 60,000/ul
500
Biphasic hemolysin, associated with PCH
What is IgG auto anti-P
500
Antibodies considered "cold" show optimal reactivity at or below what temperature?