24-72 hours after setup at PeaceHealth Laboratories’ reference lab, next run if titered.
CPT Code:
86738-90 x2
Specimen Collection Details
Collection:
One 7.5 mL serum separator tube (SST).
Handling:
Allow to clot, centrifuge and separate serum from cells and immediately pour into a plastic vial. Refrigerate. Specimens must be labeled ‘acute’ or ‘convalescent’.
Stability:
48 hours ambient, 14 days refrigerated, or 1 year frozen.
Standard Volume:
0.5 mL serum.
Minimum Volume:
100 µL serum.
Transport:
Refrigerated.
Comments:
Parallel testing is preferred and convalescent specimen must be received within 30 days of the receipt of acute specimen.
Rejection Criteria:
Plasma; severly lipemic, hemolyzed, heat-inactivated, contaminated, or icteric specimen.
Reference Range:
Mycoplasma pneumoniae Antibody, IgG
<0.10 U/L
Negative
0.10-0.32 U/L
Equivocal
>0.32 /L
Positive
Mycoplasma pneumoniae Antibody, IgM
≤0.76 U/L
Negative. No clinically significant amount of M. pneumoniae antibody detected.
0.77-0.95 U/L
Low positive. M. pneumoniae-specific IgM presumptively detected. Collection of a follow-up sample in one to two weeks is recommended to assure reactivity.
≥0.96 U/L
Positive. Highly significant amount of M. pneumoniae-specific IgM antibody detected. However, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection.
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