How can a phlebotomist distinguish whether a collection tube contains serum or plasma?
SST in the collection tube indicates plasma.
Sodium fluoride in the collection tube indicates serum.
Sodium citrate in the collection tube indicates serum.
EDTA in the collection tube indicates plasma.
None
The Correct Answer is A
Choice A Reason:
SST, or Serum Separator Tube, contains a gel at the bottom to separate the blood from the serum upon centrifugation. It does not indicate plasma; rather, it is used to collect serum after the blood has clotted. The SST allows for the blood to clot and the serum to be separated for various tests that require serum instead of plasma.
Choice B Reason:
Sodium fluoride is a common additive in collection tubes that serves as a glycolysis inhibitor. It preserves glucose levels and is not specifically indicative of serum. However, it is often used in grey-top tubes, which are typically used for glucose testing and may contain plasma, not serum.
Choice C Reason:
Sodium citrate is an anticoagulant that binds calcium in the blood, preventing clotting. Tubes with sodium citrate are used to collect plasma for coagulation studies, not serum. Therefore, this statement is incorrect as sodium citrate indicates plasma, not serum.
Choice D Reason:
EDTA, or Ethylenediaminetetraacetic acid, is an anticoagulant that binds calcium ions, preventing blood from clotting. Tubes with EDTA are used for collecting plasma because they prevent clotting and allow for the separation of plasma from the blood cells upon centrifugation. This is the correct choice as EDTA indicates plasma.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason:
Using only one patient identifier is not sufficient to ensure patient safety and accuracy in healthcare settings. It increases the risk of misidentification, which can lead to serious medical errors. Therefore, one identifier is not the standard practice for patient verification before a blood draw.
Choice B Reason:
While two identifiers are commonly used in many healthcare settings as a minimum requirement, they may not always provide enough differentiation, especially in larger facilities where patient names may be similar. Two identifiers are often the minimum standard, but they are not the most comprehensive approach.
Choice C Reason:
Three unique patient identifiers provide a more robust method for verifying a patient's identity, significantly reducing the likelihood of errors. According to the Clinical and Laboratory Standards Institute (CLSI), three identifiers are recommended to ensure the correct patient is being collected. This may include the patient's full name, date of birth, and medical record number or another unique identifier.
Choice D Reason:
While using four unique identifiers could further reduce the risk of patient misidentification, it is not typically required as the standard minimum. Three identifiers are generally considered adequate for most healthcare settings to ensure patient safety and proper identification.
Correct Answer is D
Explanation
Choice A reason:
Leaving a patient's record on a countertop while assisting other patients is not an acceptable HIPAA practice. Patient records contain sensitive information and should be kept secure at all times to maintain confidentiality. Leaving them in a place where unauthorized individuals could potentially access them violates HIPAA regulations.
Choice B reason:
Discarding patient contact information in the trash is a violation of HIPAA rules. Any documents containing patient information must be disposed of through secure methods, such as shredding, to ensure that the information cannot be retrieved or used improperly.
Choice C reason:
Sharing passwords with anyone, including coworkers, is against HIPAA guidelines and general security best practices. Each staff member should have a unique login credential to ensure that access can be tracked and that each person is accountable for their actions within the system.
Choice D reason:
Discussing patient information with an assisting coworker is acceptable under HIPAA, provided that the coworker has a legitimate need to know the information for treatment, payment, or healthcare operations purposes. This type of sharing is necessary for collaborative care and is permitted as long as it is done in a manner that protects the patient's privacy.
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