Which of the following is a phlebotomist required to document on a CBC specimen label?
Patient's insurance provider name
Phlebotomist's full name
Phlebotomist's certification number
Patient's identification number
The Correct Answer is D
Choice A reason:
The patient's insurance provider name is not typically required on a CBC specimen label. While insurance information is crucial for billing purposes, it does not serve as an identifier for the specimen itself and is therefore not documented on the label.
Choice B reason:
The phlebotomist's full name is not a requirement for a CBC specimen label. The focus of documentation on the label is on patient identification and specimen integrity, not the identity of the healthcare professional collecting the specimen.
Choice C reason:
A phlebotomist's certification number is also not required on a CBC specimen label. While the phlebotomist's credentials are important for their professional status, they are not part of the necessary documentation for a specimen label.
Choice D reason:
The patient's identification number is a critical piece of information that must be documented on a CBC specimen label. This unique identifier links the specimen to the patient's medical record, ensuring that the test results are accurately recorded in the patient's health history.
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Correct Answer is C
Explanation
Choice A reason:
Holding the two slides at a 90-degree angle is not the correct technique for performing a blood smear. This angle is too steep and would not allow the blood to spread thinly across the slide, which is necessary for creating a quality smear that can be examined under a microscope.
Choice B reason:
Allowing the blood drop to clot slightly before performing the smear is not advisable. Clotting can interfere with the spread of the blood and the formation of a monolayer, which is essential for accurate microscopic examination. The blood should be fresh and anticoagulated to prevent clotting.
Choice C reason:
Holding the slides at a 30-degree angle is the correct technique for performing a blood smear. This angle allows the spreader slide to push the blood drop smoothly across the patient slide, creating a thin, even layer of blood that is ideal for microscopic analysis. The angle, speed, and pressure must be consistent to achieve a quality smear.
Choice D reason:
Allowing the blood drop to clot completely before performing the smear would make it impossible to create a smear. Clotted blood cannot be spread into a thin layer, which is necessary for microscopic examination of the blood cells.
Correct Answer is D
Explanation
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.
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