Which of the following actions is appropriate when transporting a specimen for ABG analysis?
Collecting the specimen in an SST
Placing the specimen in ice
Collecting the specimen in sodium citrate
Inserting the specimen in a light-resistant package
The Correct Answer is B
Choice A reason:
Collecting the specimen in an SST (serum separator tube) is not suitable for ABG (arterial blood gas) analysis. SST tubes are used for chemistry tests that require serum separation after centrifugation and are not designed for the preservation of blood gases.
Choice B reason:
Placing the specimen in ice is the correct action when transporting a specimen for ABG analysis. Cooling the specimen slows down metabolic processes, which can alter the levels of gases and pH in the blood if not promptly analyzed. This is particularly important if there is a delay expected in the analysis of the ABG specimen.
Choice C reason:
Collecting the specimen in sodium citrate is not appropriate for ABG analysis. Sodium citrate is an anticoagulant used in coagulation studies and would interfere with the measurement of blood gases and pH levels in an ABG analysis.
Choice D reason:
Inserting the specimen in a light-resistant package is not a standard requirement for ABG specimens. While protecting specimens from light is important for certain types of tests, such as those for bilirubin, it is not necessary for ABG analysis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason:
The axillary vein is not commonly used for routine venipuncture due to its location in the armpit area, where it is more difficult to access and poses a higher risk of complications.
Choice B reason:
The median cubital vein is often the vein of choice for venipuncture due to its size and accessibility. However, in the case of a patient with bilateral scarring on the forearms, this vein may be compromised, making it a less suitable option.
Choice C reason:
The basilic vein, while also a common site for venipuncture, is located on the inner aspect of the arm and may be affected by the scarring on the patient's forearms. Additionally, it is closer to nerves and arteries, which increases the risk of complications.
Choice D reason:
The dorsal hand veins are a good alternative for venipuncture when the more common sites are not available, such as in the case of a patient with bilateral scarring on the forearms. These veins are usually more superficial and can be accessed with minimal risk of complications.
Correct Answer is A
Explanation
Choice A Reason:
Occult blood detection is a test that a phlebotomist is allowed to perform according to CLIA regulations. This test is typically used to detect hidden blood in the stool, which can be an early sign of colorectal cancer or other digestive system diseases. It is considered a waived test under CLIA, meaning it is simple and carries a low risk for an incorrect result.
Choice B Reason:
Flow cytometry is a complex test that requires specialized training and equipment. It is used to analyze the physical and chemical characteristics of particles in a fluid as they pass through at least one laser. Phlebotomists are not typically trained to perform this type of analysis, as it falls under the category of high complexity testing.
Choice C Reason:
Genetic molecular tests are used to detect specific sequences in DNA or RNA that may or may not lead to disease. These tests are complex and require specialized knowledge and equipment. They are not within the scope of practice for phlebotomists, who are trained primarily in blood collection.
Choice D Reason:
Electrophoresis is a laboratory technique used to separate DNA, RNA, or protein molecules based on their size and electrical charge. This type of test is also complex and requires specialized training and equipment, which is beyond the scope of a phlebotomist's duties.
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