Which of the following specimens has a phlebotomist appropriately prepared for transport?
A red-top tube that is being shipped after clotting for 15 minutes and being centrifuged
A tube containing serum that is being shipped after separation from a lavender-top tube
A tiger-top tube for bilirubin testing that is being shipped in a clear biohazard bag
A green-top tube for ammonia testing that is being shipped in an icy water mixture
The Correct Answer is D
Choice A Reason:
A red-top tube is used for serum determinations in chemistry and should be allowed to clot completely, typically for 30 minutes, before centrifugation. Shipping after only 15 minutes may result in incomplete clotting and potentially inaccurate test results.
Choice B Reason:
Serum should not be separated from a lavender-top tube, as this type of tube contains EDTA and is used for whole blood tests, not serum. This indicates a misunderstanding of the tube's purpose and could lead to compromised test results.
Choice C Reason:
A tiger-top tube, also known as a serum separator tube, is used for various chemistry tests. However, bilirubin is light-sensitive, and specimens for bilirubin testing should be protected from light, not shipped in a clear bag. This could lead to degradation of the bilirubin and inaccurate results.
Choice D Reason:
A green-top tube contains heparin and is used for plasma determinations. Ammonia testing requires the plasma to be placed on ice immediately after collection to inhibit the continued production of ammonia from red blood cells. Therefore, shipping in an icy water mixture is the correct procedure to ensure accurate ammonia levels.
In conclusion, the proper preparation and transport of blood specimens are crucial for the accuracy of laboratory tests. The green-top tube for ammonia testing, shipped in an icy water mixture, is the only option that follows the correct protocol for specimen handling and transport.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Hemostasis is the process of blood clotting and the cessation of bleeding. While it is a desired outcome following any puncture, squeezing the puncture site would not typically cause hemostasis as a complication. It is the body's natural response to injury to prevent excessive blood loss.
Choice B Reason:
Hemolysis refers to the rupture of red blood cells, which can occur when excessive pressure is applied to a puncture site during a capillary blood collection. This pressure can cause the cells to burst, releasing their contents into the plasma, which can interfere with various laboratory tests and lead to inaccurate results.
Choice C Reason:
Homeostasis is the body's ability to maintain a stable internal environment despite changes in external conditions. It is not a complication but rather a regulatory process. Squeezing a puncture site does not directly relate to homeostasis as a complication.
Choice D Reason:
Hypobilirubinemia is a condition where there is less than the normal amount of bilirubin in the blood. It is not a complication associated with squeezing a puncture site. Bilirubin levels are typically affected by liver function and red blood cell breakdown, not by the mechanical action of squeezing a site.
Correct Answer is B
Explanation
Choice A Reason:
Shoe covers are used to protect the shoes and prevent the spread of contaminants from one area to another. They are not specifically required for droplet precautions during blood glucose monitoring. Droplet precautions typically focus on protecting mucous membranes of the eyes, nose, and mouth from droplet spatter.
Choice B Reason:
Masks are essential when dealing with patients under droplet precautions. Droplets can transmit infections when a person coughs, sneezes, or talks, and a mask provides a barrier that prevents the inhalation of these potentially infectious droplets. For procedures like blood glucose monitoring, where close contact with the patient is necessary, wearing a mask is crucial to protect both the healthcare worker and the patient.
Choice C Reason:
A gown is used to protect the healthcare worker's skin and clothing from contamination with potentially infectious material. While it is an important piece of personal protective equipment, it is not the primary requirement for droplet precautions in the context of blood glucose monitoring, unless there is a risk of substantial splashing or spraying of bodily fluids.
Choice D Reason:
Goggles are used to protect the eyes from splashes of blood or other body fluids. They are important in procedures where there is a risk of splashing, but for blood glucose monitoring, the risk is minimal. Therefore, goggles are not the primary piece of equipment required for droplet precautions in this scenario.
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