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🌱 來自: Diagnostic studies-pneumonia

Sputum Gram stain and Cx

• reliable if high quality (ie, sputum not saliva; <10 squam cells/lpf).
• If bacterial PNA should be purulent (>25 PMN/lpf).
• Yield ↓ >10 h after abx (CID 2014;58:1782).