Methicillin-resistant Staphylococcus aureus (MRSA), NAA

CPT: 87641
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Expected Turnaround Time

1 - 3 days

Related Documents

For more information, please view the literature below.

Microbiology Specimen Collection and Transport Guide

Specimen Requirements


Nasal swab


One swab

Minimum Volume

One swab


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.

Storage Instructions

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

Causes for Rejection

Inappropriate transport or storage conditions; name discrepancy or unlabeled specimen; expired swab transport; wire-shaft swab

Test Details


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.


Nucleic acid amplification (NAA)


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
182956 MRSA by NAA 35492-8 182957 MRSA by NAA 35492-8

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