A clinical laboratory performs real-time PCR for detection of MRSA in the area where specimens are plated. The supervisor discovers that the last 50 specimens tested were positive. However, companion cultures were positive for only 15 of the specimens. What is the most likely reason for this discrepancy?
A clinical laboratory performs real-time PCR for detection of MRSA in the area where specimens are plated. The supervisor discovers that the last 50 specimens tested were positive. However, companion cultures were positive for only 15 of the specimens. What is the most likely reason for this discrepancy?
💡 Explanation
A clinical laboratory performs real-time PCR for detection of MRSA in the area where specimens are plated. The supervisor discovers that the last 50 specimens tested were positive. However, companion cultures were positive for only 15 of the specimens. What is the most likely reason for this discrepancy?
✓ Correct Answer: D. The PCR workstation has been contaminated with MRSA DNA
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