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Mycoplasma pneumoniae Antibody, IgG
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Ordering Recommendation
Mycoplasma pneumoniae Antibodies, IgG & IgM (0050399) is preferred.
Mnemonic
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Sun-Sat
Reported
1-2 days
New York DOH Approval Status
Specimen Required
Serum separator tube.
Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."
Refrigerated.
Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval
< 0.10 U/L: Negative
0.10-0.32 U/L: Equivocal
> 0.32 U/L: Positive
Interpretive Data
Over 50 percent of healthy adults have a relatively high background of specific M. pneumoniae IgG antibodies in their sera, probably because of past M. pneumoniae infections. Therefore, paired sera obtained with a time interval of 1 to 3 weeks are highly recommended in adults to confirm reinfection by M. pneumoniae, which is demonstrated by a significant change in IgG antibodies. A significant change is indicated if one specimen is above 0.32 U/L and the other is below 0.20 U/L.
FDA
Note
Hotline History
CPT Codes
86738
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0050397 | Mycoplasma Pneumoniae Antibody IgG | 5255-5 |
Aliases
- M pneumoniae antibody IgG
- M pneumoniae IgG
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