Methicillin-resistant Staphylococcus aureus (MRSA), NAA

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Turnaround Time: 1 - 3 days
CPT Code:


Test Type: One nasal swab


MRSA by NAA is a qualitative in vitro diagnostic test for the direct detection of nasal colonization by methicillin-resistant Staphylococcus aureus (MRSA) to aid in the prevention and control of MRSA infections in health care settings.

MRSA by NAA is not intended to diagnose MRSA infections nor to guide or monitor treatment for MRSA infections. Concomitant cultures are necessary only to recover organisms for epidemiological typing or for further susceptibility testing.

Collection Details:

Collection Instructions:

Swab in Liquid Stuart Media.

Moisten the swab with two drops (about 50 μL) sterile physiological saline or use it dry. Carefully insert the swab into the patient's nostril (the swab tip must be inserted up to 2.5 cm (1 inch) from the edge of the nares). Roll the swab five times. Insert the same swab into the second nostril and repeat sampling. Place the swab in its container. Label container and ship to the laboratory according to standard operating procedures.

Store specimens at room temperature (15°C to 25°C) for 48 hours or refrigerate (2°C to 8°C) for five days.