KROK 1 2019 – Question 92 · KROK (Medicine) · Microbiology, Virology, and Immunology
A 36-year-old man provisionally diagnosed with renal tuberculosis has undergone urinary sediment analysis. Microscopy revealed acid-fast bacteria, but Pryce method detected no cord factor. Name the most reliable method of investigation that can confirm or refute this provisional diagnosis:
- A. Allergy skin test
- B. Toxigenicity testing
- C. Inoculation of laboratory animals
- D. Serological identification of the causative agent
- E. Phage typing of the obtained culture
Hint
Finding acid-fast rods is not specific, so ask which method can distinguish true tuberculous infection from harmless saprophytic mycobacteria that contaminate urine.
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