MLT 120 Compat review Exam | Questions with
100% Correct Answers | Verified | Latest Update
2026
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Terms in this set (43)
How long must a pre-transfusion At least 7 days
sample and donor segments from a
transfused donor unit be kept by the
transfusion facility?
What ABO type is considered the O negative because it does not have any ABO
universal donor and why? antigens on the surface of the cells
What ABO type is considered the AB positive because it doesn't have any ABO or Rh
universal recipient and why? antibodies in their plasma
What pieces of information must be Full name, MRN, DOB, test to be performed; If
present on a request form for transfusion is requested, type and amount of blood
compatibility testing? component requested, date of request, and date
of transfusion
What two anticoagulants prevent the EDTA and sodium citrate
observation of hemolysis?
What pre-transfusion tests are ABO/Rh, antibody screen
required for autologous
transfusions?
, When can an immediate spin When there is no history of an alloantibody and the
crossmatch be performed? current antibody screen is negative
What are the preferred collection Plain red for serum and lavender for plasma
tubes for pre-transfusion testing?
How often must a new specimen be 3 days
collected from patients receiving
multiple transfusions?
What is the maximum length of time 4 hours
allowed for transfusion of a unit of
packed RBCs?
How long must a patient's BB testing 5 years
results remain available for
immediate review in the lab?
What is the only additive that can be Saline
added to packed RBCs prior to or
during a transfusion?
When would an AHG crossmatch be When the patient has a history of alloantibodies
required? and/or the current antibody screen is positive
What four tests must be performed ABO/Rh, weak D if necessary, antibody screen, and
on a donor unit by the collection infectious disease testing
facility?
What units must be retested by a All packed RBC units
transfusion facility for ABO?
100% Correct Answers | Verified | Latest Update
2026
Save
Terms in this set (43)
How long must a pre-transfusion At least 7 days
sample and donor segments from a
transfused donor unit be kept by the
transfusion facility?
What ABO type is considered the O negative because it does not have any ABO
universal donor and why? antigens on the surface of the cells
What ABO type is considered the AB positive because it doesn't have any ABO or Rh
universal recipient and why? antibodies in their plasma
What pieces of information must be Full name, MRN, DOB, test to be performed; If
present on a request form for transfusion is requested, type and amount of blood
compatibility testing? component requested, date of request, and date
of transfusion
What two anticoagulants prevent the EDTA and sodium citrate
observation of hemolysis?
What pre-transfusion tests are ABO/Rh, antibody screen
required for autologous
transfusions?
, When can an immediate spin When there is no history of an alloantibody and the
crossmatch be performed? current antibody screen is negative
What are the preferred collection Plain red for serum and lavender for plasma
tubes for pre-transfusion testing?
How often must a new specimen be 3 days
collected from patients receiving
multiple transfusions?
What is the maximum length of time 4 hours
allowed for transfusion of a unit of
packed RBCs?
How long must a patient's BB testing 5 years
results remain available for
immediate review in the lab?
What is the only additive that can be Saline
added to packed RBCs prior to or
during a transfusion?
When would an AHG crossmatch be When the patient has a history of alloantibodies
required? and/or the current antibody screen is positive
What four tests must be performed ABO/Rh, weak D if necessary, antibody screen, and
on a donor unit by the collection infectious disease testing
facility?
What units must be retested by a All packed RBC units
transfusion facility for ABO?
