Question 1
Which blood type is considered the universal donor for packed red blood cells?
Correct Answer:
O negative
Question 2
A patient with Type A blood has which naturally occurring antibody in their serum?
Correct Answer:
Anti-B
Question 3
Which crossmatch method is most sensitive for detecting clinically significant alloantibodies?
Correct Answer:
Antiglobulin (indirect) crossmatch
Question 4
A positive Direct Antiglobulin Test (DAT) indicates that:
Correct Answer:
The patient's red blood cells are coated with IgG or complement in vivo
Question 5
At what temperature and conditions must platelets be stored in the blood bank?
Correct Answer:
20–24°C with continuous gentle agitation
Question 1
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About this Exam

Prepare with the Medical Laboratory Scientist (MLS) Examination — ASCP Board of Certification practice quiz. This question bank includes 100 questions covering laboratory, medical, scientist, procedures, and clinical. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Medical Laboratory Scientist (MLS) Examination — ASCP Board of Certification

This practice set contains 100 questions from the matching question bank and focuses on laboratory, medical, scientist, procedures, and clinical. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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