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HelpTest Code MYCOM Mycoplasma pneumoniae Antibodies, IgM, Serum
Reporting Name
M. pneumoniae Ab, IgM, SPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Screening for IgM antibodies in the indication of recent or past exposure to Mycoplasma pneumoniae
Method Name
Only orderable as part of a profile. For more information see MYCO / Mycoplasma pneumoniae Antibodies, IgG and IgM, Serum.
Enzyme Immunoassay (EIA)
Specimen Required
Only orderable as part of a profile. For more information see MYCO / Mycoplasma pneumoniae Antibodies, IgG and IgM, Serum.
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Rejected |
| Heat inactivated specimen | Reject |
Reference Values
Only orderable as part of a profile. For more information see MYCO / Mycoplasma pneumoniae Antibodies, IgG and IgM, Serum.
Negative
Interpretation
|
IgG ELISA Result |
IgM ELISA Result |
Interpretation |
|
Positive |
Negative |
Results suggest past exposure. |
|
Positive
|
Reactive |
Prior exposure to Mycoplasma pneumoniae detected. Confirmatory testing for IgM to M pneumonia will be performed by an immunofluorescence assay. |
|
Equivocal |
||
|
Negative |
Negative |
No antibodies to M pneumoniae detected. Acute infection cannot be ruled out as antibody levels may be below the limit of detection. If clinically indicated, a second serum should be submitted in 14 to 21 days. |
|
Negative |
Reactive |
No prior exposure to Mycoplasma pneumoniae. Confirmatory testing for IgM to M pneumonia will be performed by an immunofluorescence assay. |
|
Equivocal |
||
|
Equivocal |
Negative |
Recommend follow-up testing in 10 to 14 days if clinically indicated. |
|
Reactive |
Confirmatory testing for IgM to M pneumonia will be performed by an immunofluorescence assay. |
|
|
Equivocal |
ELISA = Enzyme-linked immunosorbent assay
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 3 daysTest Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
86738
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MYCOM | M. pneumoniae Ab, IgM, S | 5257-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| MYCOM | M. pneumoniae Ab, IgM, S | 5257-1 |
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| MMYCO | M. pneumoniae Ab, IgM, S by IFA | No | No |