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HelpTest Code LAB261 Mycoplasma (Mycoplasmoides) pneumoniae with Macrolide Resistance Reflex, Molecular Detection, PCR, Varies
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
M pneumoniae PCR + Macrolide ReflexSpecimen Type
VariesNecessary Information
Specimen source is required.
Specimen Required
The high sensitivity of amplification by polymerase chain reaction requires the specimen to be processed in an environment in which contamination of the specimen by Mycoplasma (Mycoplasmoides) pneumoniae DNA is unlikely.
Submit only 1 of the following specimens:
Specimen Type: Swab
Supplies:
-Culturette (BBL Culture Swab) (T092)
-BD E-Swab (T853)
-Nasopharyngeal Swab (Nylon Mini-Tip Swab) (T861)
-Culture Swab-Liquid Stuarts/Single Swab (NP Swab) (T515)
-M4-RT (T605)
Sources: Throat, nasal, or nasopharyngeal
Container/Tube:
Preferred: Culture swab transport system (Dacron or rayon swab with aluminum or plastic shaft with either Stuart or Amies liquid medium)
Acceptable: Culture transport swab (Stuart's media) or place swab in M4, M4-RT, M5, M6, universal transport media, or ESwab
Specimen Volume: Swab
Collection Instructions:
1. Collect specimen by swabbing back and forth over mucosa surface to maximize recovery of cells.
2. Place swab back into swab cylinder.
Specimen Type: Fluid
Sources: Pleural, pericardial, cerebrospinal
Container/Tube: Sterile container
Specimen Volume: 0.5 mL
Specimen Type: Respiratory
Sources: Bronchial washing, bronchoalveolar lavage, tracheal secretions, sputum
Container/Tube: Sterile container
Specimen Volume: 1 mL
Reject Due To
| Cotton or calcium alginate-tipped swab, wooden shaft swab, transport swab containing gel or charcoal Port-a-Cul tube Anaerobic fluid vials Dry swab (no pledget or sponge) Respiratory fluid specimens placed in VTM or placed on a swab and then into VTM (M4-RT, M4, or M5) Body fluid specimens placed in VTM or placed on a swab and then in VTM (M4-RT, M4, or M5) |
Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Refrigerated (preferred) | 7 days | |
| Frozen | 7 days |
Specimen Minimum Volume
Respiratory specimen: 0.5 mL
Other specimen types: See Specimen Required
Day(s) Performed
Monday through Sunday
Specimen Retention Time
7 daysReport Available
3 to 4 daysReference Values
Negative
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| RPMPM | M. pneumoniae Macrolide Resist PCR | Yes | No |
Useful For
Diagnosing infections due to Mycoplasma (Mycoplasmoides) pneumoniae
Assessing macrolide susceptibility
Testing Algorithm
If positive, Mycoplasma pneumoniae macrolide resistance will be performed at an additional charge.
CPT Code Information
87581
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MPRP | M pneumoniae PCR + Macrolide Reflex | 29257-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SRCMP | Specimen source | 31208-2 |
| 62394 | M. pneumoniae PCR | 29257-3 |
Supportive Data
Accuracy:
The assay was validated in a blinded manner using 30 Mycoplasma (Mycoplasmoides) pneumoniae-positive specimens received from a reference lab and 6 negative specimens. The M pneumoniae polymerase chain reaction (PCR) test had 100% sensitivity and specificity when compared to the Focus Diagnostics M pneumoniae primer pair PCR assay. Whole organism spiking studies (near the limit of detection of the assay) were also performed using the following specimens: bronchoalveolar lavage/bronchial wash, nasopharyngeal and throat swabs, sputum, pericardial/pleural fluid, and cerebrospinal fluid. These specimens were confirmed as being negative for M pneumoniae prior to spiking. The sensitivity and specificity of the spiked specimens combined for all the matrices were 99% (154/155) and 100% (57/57), respectively.
Limit of detection:
The limit of detection of the assay is less than 5 target copies/mcL for all validated specimen types.
Analytical specificity:
The assay was tested against a panel of 45 organisms consisting of bacteria and viruses representing normal respiratory flora and/or respiratory pathogens. There was no cross reactivity among these organisms, which included 16 other species of Mycoplasma (Mycoplasmoides).
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.