CPT Exam Study Guide

CPT Exam Study Guide Which of the following test(s) are required to be performed by law on all newborns in the United States? - PKU Why must a phlebotomist discard the first sample drawn from a heparin or saline lock? - 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: - 450ml The donation of blood by a patient for his or her own use at a later time is known as: - 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? - 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? - 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? - Beta-carotene Which of the following samples is not collected for use as evidence in a legal proceeding? - 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: - Chain of custody Which of the following criteria is evaluated to determine if a peripheral blood smear is of adequate quality? - The slide has a feathered edge, the slide has no holes, the slide has no streaks (all of the above) Hemolysis is defined as: - 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: - CBC The phlebotomist has an order to draw all of the following tests. Which one of the test samples must be protected from light? - Vitamin B12 Who regulates the use of personal protective equipment for laboratory specimen processing? - 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? - 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: - 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? - 30 to 45 minutes Which of the following terms describes the quantitative methods used to monitor the quality of procedures? - Quality control Patient preparation, collection, and specimen transportation protocols are all part of which of the following? - Quality assurance The phlebotomist receives a request to perform a sweat chloride test on a 2-year-old child and wants to refresh her memory before performing the test. The phlebotomist consults the ______ before going to the child's room. - Procedure manual As a phlebotomist you are responsible for monitoring and controlling variables that impact your scope of practice in the collection of quality specimens. Which of the following variables is the phlebotomist most responsible for controlling? - Preanalytical variables Which of the following is not a preanalytical variable?