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Mycobacterium tuberculosis Antibody, IgG by ELISA (INACTIVE as of 5/19/14)
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, if possible.
Submit With Order
ARUP Consult®
Disease Topics
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


Compliance Statement D: This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Note
CPT Code(s)
86609
Components
Component Test Code*Component Chart NameLOINC
0051699M. tuberculosis Antibody, IgG54146-6
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • M tuberculosis Ab IgG