Which of the following would be variations of a Diagnostic test process?

• A. Patient cannot tolerate the test
• B. Patient is not compliant with preparatory instructions
• C. Test is conducted by referral to an external facility
• D. Test returns a false positive

Answer: (C)

Understanding how a diagnostic test can be executed within different workflow paths. A variation of the diagnostic test process occurs when the test is performed at a different location or by a different provider, such as being referred to an external facility. This changes the steps in the workflow (specimen transfer, scheduling, data reporting) while still achieving the same diagnostic objective. The other scenarios describe issues related to the patient’s tolerance, adherence to preparatory instructions, or the test results themselves. These affect feasibility or interpretation but do not represent an alternate execution path for performing the test.