Mycobacterium tuberculosis Antibody, IgG by ELISA
0051698
 
Ordering Recommendation
Mnemonic
TB IGG
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Thu
Reported
1-8 days
New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection.Transfer 0.5 mL serum to in an ARUP Standard Transport Tube. (Min: 0.05 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."  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Contaminated, heat-inactivated, or hemolyzed specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year  
Reference Interval
0.424 OD or less: Negative - No significant level of detectable IgG antibody to Mycobacterium tuberculosis.

0.425-0.500 OD: Equivocal - Repeat testing in 10-14 days may be helpful.

0.501 OD or greater: Positive - IgG antibody to Mycobacterium tuberculosis detected, which may indicate acute or active infection.
Interpretive Data


See Compliance Statement D: www.aruplab.com/CS
Note
CPT Code(s)
86609
Components
Component Test Code*Component Chart Name
0051699M. tuberculosis Antibody, IgG
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • M tuberculosis Ab IgG