ARUP's Laboratory Test Directory

0050697: Mycoplasma pneumoniae Antibodies Seroconversion Panel, IgG & IgM

Test Mnemonic: MYCO SERO
Methodology: Enzyme Immunoassay

Performed: Sun-Sat

Reported: 1-3 days

Specimen Required:  
Collect: One 4 mL SST acute and one 4 mL SST convalescent.

Transport: 0.5 mL serum from acute sample and 0.5 mL serum from convalescent specimen at 2-8°C. (Min: 0.2 mL each)  Submit specimens in two ARUP Standard Transport Tubes.

Pediatric Collection/Transport: 0.1 mL serum from acute sample and 0.1 mL serum from convalescent specimen at 2-8°C.

Remarks: Separate serum from cells ASAP.  Please mark specimens clearly as "acute" or "convalescent" with appropriate draw dates.  If acute specimen was previously tested by ARUP, convalescent specimen must be submitted within 30 days if seroconversion comparison testing is desired.  Testing will not be performed unless both acute and convalescent specimens are available. 

Unacceptable Conditions: Severely lipemic, icteric, hemolyzed, heat-inactivated, or contaminated specimens.

Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval:
 
 
Test Number Components Reference Interval
0050397Mycoplasma pneumoniae Antibody, IgG < 0.10 U/L: Negative
0.10-0.32 U/L: Equivocal
> 0.32 U/L: Positive
0050398Mycoplasma pneumoniae Antibody, IgM 0.76 U/L or less: Negative - No clinically significant amount of M. pneumoniae IgM 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 or greater: 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.
 

Note:
If both Mycoplasma pneumoniae IgG values are above 0.32 U/L, a ratio will be calculated and the significance will be noted on the report.

CPT Code(s):
86738 x2 Mycoplasma IgG (acute/convalescent); 86738 x2 Mycoplasma IgM (acute/convalescent)

 

 

 
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