Which of the following is NOT used as a diagnostic test in the clinical diagnosis of Burkholderia mallei in humans?

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The main idea here is safety and practicality in diagnosing a highly hazardous organism. Growing Burkholderia mallei from patient samples would require high-containment laboratory conditions and specialized expertise because the pathogen poses a significant risk to lab personnel. Because of these biosafety challenges, culture is not used as a routine clinical diagnostic test. In practice, clinicians rely on safer, faster methods such as serology to detect antibodies against the organism and PCR to detect its genetic material directly from clinical specimens. Skin testing is not used for diagnosing glanders in humans. So, culture is avoided in standard clinical practice, making it the best choice for this question.