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HESI Nutrition Practice Tests & Test Prep by Exam Edge - Free Test


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HESI Practice Test Features

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Our free HESI Nutrition Practice Test was created by experienced educators who designed them to align with the official Health Education Systems, Inc content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

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HESI Nutrition Sample Test

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Internal quality control involves statistical analysis of control samples, which are analyzed with a batch of patient samples to determine acceptability of the run. Which of the following statements is NOT correct in terms of controls?





Correct Answer:
controls are handled differently from patient specimens.


internal quality control in clinical laboratories is a fundamental process to ensure the accuracy and reliability of test results. the purpose of using control samples alongside patient samples is to monitor the analytical processes and ensure they are performing as expected. these controls help in determining whether a particular batch of tests is valid for clinical interpretation.

control samples are typically materials or solutions that are formulated to have known quantities of analytes that are being measured in patient samples. they are used to verify that the test system is working correctly on a day-to-day basis. by analyzing controls with a set of patient samples, lab personnel can determine if the test run is reliable.

the statement "controls are handled differently from patient specimens" is incorrect and represents a common misconception. for the results from control samples to be meaningful, they must be treated in the same manner as patient specimens. this includes how they are stored, how they are prepared, and how they are run through the diagnostic instruments. handling controls differently from patient samples could lead to discrepancies and misinterpretation of patient results.

this means that all aspects, such as incubation times, analysis temperatures, and pre-analysis handling conditions, should be identical for both controls and patient samples. by mirroring the handling procedures, the controls can accurately reflect the performance of the assay under the same conditions applied to patient samples.

thus, the correct approach in internal quality control is to treat control samples in exactly the same way as patient specimens to ensure the validity and reliability of the analytical testing process. this practice helps in detecting any deviations from normal operations and in taking corrective actions without compromising the accuracy of patient test results.


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