Final answer:
A specimen with a known value that is used every time a patient sample is processed is called a quality control (QC) sample. Quality control samples are used in bioanalytical testing to ensure the accuracy and reliability of the results. These samples have known values that are used to verify the performance of the test and to monitor any variations that may occur during sample processing and analysis.
Step-by-step explanation:
A specimen with a known value that is used every time a patient sample is processed is called a(n) quality control (QC) sample.
Quality control samples are used in bioanalytical testing to ensure the accuracy and reliability of the results. These samples have known values that are used to verify the performance of the test and to monitor any variations that may occur during sample processing and analysis.
For example, in a bioanalytical assay, a QC sample with a known concentration of the analyte is analyzed along with patient samples. The results obtained from the QC sample are compared to the expected values, and any discrepancies are investigated to ensure the accuracy of the assay.