One of the most important uses of the Gram stain of expectorated sputum received for routine bacteriologic culture is to:

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The respiratory secretions sent to the laboratory for bacterial culture should be microscopically examined via Gram-stained smear.One of the most important uses of the Gram stain is to evaluate the quality of expectorated sputum received for routine bacteriologic culture.An acceptable specimen yields less than 10 squamous epithelial cells per low-power field (100′).

One of the Most Important Uses of the Gram Stain