Medical Laboratory Technician Exam FREE Medical Laboratory Technician MCQ Questions and Answers 3

Question 1

Which blood type is considered the universal plasma donor?

Accepted Answer

AB

Answer

Type AB plasma lacks both anti-A and anti-B antibodies, making it safe for transfusion to any recipient.

Question 2

What is the expected platelet count range for a normal adult?

Accepted Answer

150,000-400,000/mcL

Answer

The normal adult platelet count ranges from 150,000 to 400,000 per microliter of blood.

Question 3

Which organism is the most common cause of urinary tract infections in the United States?

Accepted Answer

Escherichia coli

Answer

E. coli accounts for approximately 80% of uncomplicated urinary tract infections.

Question 4

A serum specimen appears lipemic. Which test result is most likely to be affected?

Accepted Answer

Triglycerides

Answer

Lipemia directly interferes with triglyceride measurement and causes turbidity that affects spectrophotometric assays.

Question 5

Which quality control rule indicates a systematic error when two consecutive controls exceed 2 standard deviations on the same side of the mean?

Accepted Answer

2-2s rule

Answer

The 2-2s rule detects systematic error when two consecutive controls exceed 2 SD in the same direction.

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