Equipment Operation & Maintenance Flashcards
7 cards from real ADM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Operation & Maintenance flashcards as text
When using a point-of-care urine immunoassay cup, a temperature strip reading of 90–100°F indicates which of the following?
Answer: The specimen temperature is within acceptable range for a fresh void
A temperature between 90–100°F confirms the urine was freshly voided from the body, meeting validity requirements.
What is the primary purpose of performing quality control (QC) runs on an onsite immunoassay drug testing analyzer?
Answer: To ensure the instrument is performing within acceptable accuracy parameters
QC runs with known-positive and known-negative controls verify that the analyzer's results are accurate and reliable before testing patient specimens.
A clinic's breathalyzer displays an 'Err 4' fault code during a patient test. What is the most appropriate next step?
Answer: Refer to the manufacturer's troubleshooting guide and do not use the device until the error is resolved
Error codes indicate a device malfunction; the manufacturer's guide must be consulted and the device must be taken out of service until the issue is corrected.
Gas chromatography-mass spectrometry (GC-MS) is used as a confirmatory test for drug screening primarily because it:
Answer: Provides high specificity by identifying the exact molecular structure of a compound
GC-MS identifies compounds by their unique molecular fragmentation pattern, making it highly specific and resistant to cross-reactivity false positives.
Which of the following best describes the correct procedure for reading a urine drug test strip after the manufacturer's specified reaction time has elapsed?
Answer: Any line present, regardless of intensity, in the test region indicates a negative result
On a competitive immunoassay strip, any visible line in the test region—regardless of intensity—indicates a drug concentration below the cutoff and is read as negative.
A urine specimen submitted for drug testing is found to have a creatinine level of 8 mg/dL and a specific gravity of 1.001. This specimen is most accurately classified as:
Answer: Substituted
Federal workplace drug testing guidelines classify a specimen as substituted when creatinine is less than 2 mg/dL and specific gravity is less than 1.0010 or greater than 1.0200; values of 8 mg/dL and 1.001 indicate dilution rather than substitution.
How often should an evidential breath testing (EBT) device used in a DOT-regulated program be subject to an external calibration check?
Answer: Every 7 days or 150 tests, whichever comes first
DOT regulations (49 CFR Part 40) require EBT external calibration checks every 7 days or 150 tests, whichever occurs first, to ensure ongoing accuracy.