Yale New Haven Hospital

Department of Laboratory Medicine
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Toxoplasma gondii antibody, IgM

Lab Section: 

Immunology

 

Lab Location: 

Main Lab

Test ID: 

LAB659

 

Synonyms: 

Anti-Toxoplasma Antibody IgM

Methodology: 

Enzyme-Linked Immunosorbent Assay

Schedule: 

Tuesday

Reported: 

7 days

Specimen Requirements: 

Collection: 5.0 mL Blood in a Gold Top Tube.
Pediatric volume: 1.0 mL.
Unacceptable conditions: Grossly hemolyzed specimens.
Stability: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 6 months (avoid repeated freeze/thaw cycles)

 

Notes: 

Clinical Indications: Active toxoplasmosis is suggested by the presence of IgM antibodies, but elevated anti-IgM titers are often absent in immunocompromised patients. In addition, elevated IgM can persist from an acute infection that may have occurred as long ago as 1 year.

Reference Interval: 

Reference Interval (OD Ratio): 
        ≤0.90 = Negative 
        0.91-1.09 = Equivocal 
        ≥1.10 = Positive

CPT Code(s): 

86778

Last Changed: 

12/05/2016 13:11:01

Last Reviewed: 

8/22/2017 3:45:11 PM