Ordering Recommendations

MRSA by PCR is a qualitative 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 and for de-escalation of antibiotics in patients presenting with pneumonia.

Patient Preparation

Patient should be off antibiotics at least 72 hours prior to specimen collection.

Collect

Preferred specimen: 
Eswab: Collect the nasal specimen by sampling both nares one at a time with the same Eswab. Refer to Specimen Collection Guide. 

Also acceptable:
Red top swab (COPAN with sponge): Remove cap from red top swab and insert both swabs into the patient's nostril (the swab tip must be inserted up to 1 inch from the edge of the nares). Roll the swab five times. Insert the same swabs into the second nostril and repeat sampling. 

Specimen Container

Preferred: Eswab

Also acceptable: Red top swab (COPAN with sponge)



Pediatric Collection

NICU patients: Use Eswab with mini-tip swab for collection.
Eswab: Collect the nasal specimen by sampling both nares one at a time with the same Eswab.

Storage/Transport Temperature

Room Temperature

Unacceptable Conditions

Specimen types other than Nasal.

Remarks

Nasal only.

Stability (from collection to initiation)

Ambient: 24 hours; Refrigerated: 1 week; Frozen: Unacceptable

Ordering Recommendations

MRSA by PCR is a qualitative 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 and for de-escalation of antibiotics in patients presenting with pneumonia.

EPIC Order Code

LAB3969

Sunquest Code

MRSAPC

Synonyms

  • LAB3969
  • MRSA Screen
  • MRSA PCR
  • Screen, MRSA

CPT Codes

87641

LOINC

  • 72887-3

Reference Interval

Not Detected

Interpretive Data

MRSA by PCR is not intended to diagnose MRSA infections nor to guide or monitor treatment for MRSA infections. 

Negative nasal MRSA PCR has a high negative predictive value for MRSA pneumonia. Consider stopping Vancomycin if no other clinical indication. Contact Antimicrobial Stewardship or Infectious Diseases for further recommendations. 
Collection

Ordering Recommendations

MRSA by PCR is a qualitative 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 and for de-escalation of antibiotics in patients presenting with pneumonia.

Patient Preparation

Patient should be off antibiotics at least 72 hours prior to specimen collection.

Collect

Preferred specimen: 
Eswab: Collect the nasal specimen by sampling both nares one at a time with the same Eswab. Refer to Specimen Collection Guide. 

Also acceptable:
Red top swab (COPAN with sponge): Remove cap from red top swab and insert both swabs into the patient's nostril (the swab tip must be inserted up to 1 inch from the edge of the nares). Roll the swab five times. Insert the same swabs into the second nostril and repeat sampling. 

Specimen Container

Preferred: Eswab

Also acceptable: Red top swab (COPAN with sponge)



Pediatric Collection

NICU patients: Use Eswab with mini-tip swab for collection.
Eswab: Collect the nasal specimen by sampling both nares one at a time with the same Eswab.

Storage/Transport Temperature

Room Temperature

Unacceptable Conditions

Specimen types other than Nasal.

Remarks

Nasal only.

Stability (from collection to initiation)

Ambient: 24 hours; Refrigerated: 1 week; Frozen: Unacceptable
Ordering

Ordering Recommendations

MRSA by PCR is a qualitative 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 and for de-escalation of antibiotics in patients presenting with pneumonia.

EPIC Order Code

LAB3969

Sunquest Code

MRSAPC

Synonyms

  • LAB3969
  • MRSA Screen
  • MRSA PCR
  • Screen, MRSA
Fees & Codes

CPT Codes

87641

LOINC

  • 72887-3
Clinical & Interpretive

Reference Interval

Not Detected

Interpretive Data

MRSA by PCR is not intended to diagnose MRSA infections nor to guide or monitor treatment for MRSA infections. 

Negative nasal MRSA PCR has a high negative predictive value for MRSA pneumonia. Consider stopping Vancomycin if no other clinical indication. Contact Antimicrobial Stewardship or Infectious Diseases for further recommendations. 
Lab Use Only

Test Information

Performing Lab
Deaconess Hospital
Methodology
Qualitative RT-PCR
Performed
Sun-Sat
Reported
Within 24 hours