CPT WRITTEN EXAM QUESTIONS & ANSWERS.
Which of the following test(s) are required to be performed by law on all newborns in the United States? - CORRECT ANSWER PKU
Why must a phlebotomist discard the first sample drawn from a heparin or saline lock? - CORRECT ANSWER Potential dilution of th...
Which of the following test(s) are required to be performed by law on all newborns in the United States?
- CORRECT ANSWER PKU
Why must a phlebotomist discard the first sample drawn from a heparin or saline lock? - CORRECT
ANSWER Potential dilution of the specimen
A first-time blood donor wants to know how much blood will be taken during the procedure. The
phlebotomist states that the average volume of a "unit" of blood is: - CORRECT ANSWER 450ml
The donation of blood by a patient for his or her own use at a later time is known as: - CORRECT
ANSWER Autologous donation
The phlebotomist has just completed the collection of a specimen for cold agglutinins. What special
collection and/or transport measures must be taken by the phlebotomist after collection of this sample?
- CORRECT ANSWER The specimen must be collected in a prewarmed tube
Which of the following sample collections does not require transportation of the sample to the
laboratory in a chilled environment? - CORRECT ANSWER Vitamin A
The phlebotomist has just collected a specimen that needs to be protected from light during
transportation to the laboratory. Which of the following specimens did the phlebotomist collect? -
CORRECT ANSWER Beta-carotene
Which of the following samples is not collected for use as evidence in a legal proceeding? - CORRECT
ANSWER PKU testing
The phlebotomist is called to the ER to pick up forensic specimens for a sexual assault. The most
important concept the phlebotomist must adhere to in handling forensic specimens in proper: -
CORRECT ANSWER Chain of custody
, Which of the following criteria is evaluated to determine if a peripheral blood smear is of adequate
quality? - CORRECT ANSWER The slide has a feathered edge, the slide has no holes, the slide has no
streaks (all of the above)
Hemolysis is defined as: - CORRECT ANSWER Destruction of red blood cells
The phlebotomist has received an order to draw a specimen from a patient known to have a cold
agglutinin. The test that has been ordered requires that an EDTA whole blood tube be collected in a
prewarmed tube and remain warm until testing. The test ordered is a: - CORRECT ANSWER CBC
The phlebotomist has an order to draw all of the following tests. Which one of the test samples must be
protected from light? - CORRECT ANSWER Vitamin B12
Who regulates the use of personal protective equipment for laboratory specimen processing? -
CORRECT ANSWER OSHA
You are responsible for cataloging the specimens being delivered by the courier to the laboratory. Which
of the following is a unique identifying number that you will use for cataloging samples in the
laboratory? - CORRECT ANSWER Accession number
You are called to assist in central processing. The specimens that you are given to process require the
separation of small portions of plasma or serum from cellular elements to individual containers called: -
CORRECT ANSWER Aliquots
The phlebotomist has drawn a series of plain red top (no additives) for immunologic testing. At room
temperature, complete clotting of these tubes will occur in what time frame? - CORRECT ANSWER 30 to
45 minutes
Which of the following terms describes the quantitative methods used to monitor the quality of
procedures? - CORRECT ANSWER Quality control
Patient preparation, collection, and specimen transportation protocols are all part of which of the
following? - CORRECT ANSWER Quality assurance
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