The automated blood bank analyzer does not detect weak forms of the D antigen.  The supervisor stated that it should be acceptable since the analyzer would prevent a weak D patient from developing anti-D.  Why is this true?

A donor who donated blood a year ago tested positive for anti-HCV recently.  Donor records for this should be maintained:

A 68 year old female began experiencing shaking, chills, and fever of 103 degrees Fahrenheit, approximately 30 minutes after a unit of packed red blood cells.  After transfusion investigation workup is completed, the most likely type of reaction is:

An antibody was identified as anti-M.  The patient serum reacted with M+N- cell with a 3+, while a M+N+ cell was 1+.  What is the most likely cause of the varying degree of reactions?

A patient has a hemoglobin of 7.3g/dL.  The surgeon would like the patient’s hemoglobin to be at least 10g/dL before surgery.  How many units should be transfused to accomplish this?

A laboratory scientist is combining four single units of platelets into one large unit.  The expiration date of the newly pooled unit of platelets is:

Which of the following describe the inheritance pattern of the ABO blood group genes?

Testing with the tube method, a patient with an IgM antibody will react at:

A pregnant female has been typed as B negative with a titer of anti-D of 1:512.  The baby is becoming severely anemic and the physician is requesting intrauterine transfusion.  Which of the following blood types should be selected?

A cold-reacting antibody is found in the serum of a recently transfused patient and is suspected of being anti-I. The antibody identification panel shows reactions with all cells at room temperature, including the autocontrol.  What procedure would help in positively identifying the antibody?