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WorksheetsImmunohematology - Bloog grouping tests, part 2
Total questions: 16
Worksheet time: 16mins
How long is the antibody screening result valid from the sampling?
Without a time limit
5 days
A month
A week
When is antibody identification necessary? (select one or more)
When the result of an antibody screening or compatibility test is positive
When red blood cell antibodies have previously been identified or suspected
When the patient has been abroad
When the patient is having a blood transfusion
What is antigen identification called?
Genotyping
Red blood cell antibody identification
Direct Coombs test
Phenotyping
What is the purpose of a compatibility test? (select one or more)
To ensure the accuracy of the blood group test result
To find antibodies to rare blood groups
To ensure the ABO compatibility of the blood product
To find rare blood types
The compatibility test
can be made using the same sample as the blood group determination
is made using a different sample than the patient’s blood group determination
is always performed on the same day as the planned blood transfusion
is performed using the blood donor’s plasma
How long is the compatibility test sample valid?
1 day
5 days
7 days
10 days
If the compatibility test result is positive (select one or more)
the reason must be resolved before any of the suitable units can be transferred
the suitable units can be transferred, but not the unsuitable
the blood transfusion is cancelled
the antibody detection is made
What do panagglutinins do?
Hemolyze all red blood cells and complicate assays
React just at +37 °C
React with red blood cells and complicate assays
Cause ”money roll” formation in the sample
What kind of methods are used in blood grouping tests? (select one or more)
Gel column test
Solid phase technique
Spin-tube method
Flow cytometry
What can cause an unclear result in the ABO assay of red blood cells? (select one or more)
A weak antigen
Red blood cells that do not match the patient’s ABO blood group have been transferred to the him/her
Stem cells transfused to the patient are from a different ABO blood group than his/her own
Abnormally high plasma protein concentrations
In the RhD assay, it is recommended to use IgG class anti-D reagents
True
False
How many screening cell suspensions are used for antibody screening in the Type and Screen policy?
2
3
4
5
Antibody screening is performed on the patient's plasma
True
False
What can cause problems in antibody detection? (select one or more)
The patient has several red blood cell antibodies
There are too many screening cells
The patient has antibodies for a very common red blood cell antigen
The antibody is very weak
The compatibility test is made for all (select one or more)
platelet preparations
frozen plasma preparations
red blood cell units that are going to be transferred
units that have been used to make white blood cell preparations
In the compatibility test, it is sufficient to check the blood group only from red blood cells as the result is compared to the result obtained in the blood group assay
True
False
