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WorksheetsAntibody Screening
Total questions: 14
Worksheet time: 9mins
The purpose of LISS (Low Ionic Strength Solution) as enhancer is to:
A- Identify nuisance antibodies present
B- Stabilize and prepare blood samples
C- Prevent possible hemolysis of cells
D- Promote antigen-antibody reactivity
A
Identify nuisance antibodies present
B
Stabilize and prepare blood samples
C
Prevent possible hemolysis of cells
D
Promote antigen-antibody reactivity
The source of antigens used for antibody detection consists of ______
AB cells
O cells
H cells
MNS cells
Used to demonstrate the presence of autoantibodies
AHG
blood grouping test
Autocontrol
indirect antibody test
Indirect Coombs is
Tests for antibodies in the serum
detect in vivo coating of RBCs
Can be used to help diagnose HDN
Complemenary structure of antibody molecule and epitope
When one or more of the ____ D antigen are missing, a weak D phenotype may be expressed
capsid
N-DRC
envelope
epitopes
the phenotypic expression of common red cell antigens for each vial has been established and provided in the form of an (a)
Antibodies that demonstrate dosage
ABH, Rh, Lewis, Kidd, P, I
Rh, Duffy, Kidd, MNS, Lutheran
MN, Duffy, Lutheran, Ch, Rg
Lea, I/i
If the antibody screen shows reaction at 37C, is it most likely to be an IgG or IgM antibody?
(a)
Reverse grouping is to
known reagent antisera to detect ABO antigens on the patient's red blood cells
known reagent screening cells to detect clinically significant antibodies in the patient's serum or plasma
known reagent red blood cells to detect ABO antibodies in the patient's serum or plasma.
known reagent antisera to phenotype donor red blood cells for clinically significant antigens.
A former patient from O&G had an anti-E two years ago, but her antibody panel is now negative. Since she now needs blood for cesarean surgery, what should the blood bank do?
Give random compatible units.
Get autologous blood from relatives.
Crossmatch E-negative units.
Give group O negative whole blood.
What is the maximum interval during which a recipient sample may be used for compatibility testing?
3 days
48 hours
2 months
1 day
You perform a ABO/Rh test on a 54 years old female patient and you obtain the following results.
Anti-A - 4+
Anti-B - 4+
Anti-D - 4+
D control - negative
A1 cells - 2+
B cells - 0
What could be the Type/Rh of this patient?
A1B positive
invalid
A2B positive
O positive
Bombay phenotype
hh
HH
O'hh
ABOH
Anti-H antisera is prepared from
pig mucosa
Ulex europeaus
Vicia graminae
Iberis amara
