Home
HelpTEST ID TXPAB Toxoplasma gondii Antibody, IgM and IgG, Serum
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.7 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Useful For
Qualitative detection of IgM and quantitative detection of IgG antibodies to Toxoplasma gondii in human serum
Highlights
Detection of IgM-class antibodies to Toxoplasma gondii may be useful as a screen for recent infection with T gondii. Per the US Food and Drug Administration, IgM-positive results by a screening assay should be confirmed by a Toxoplasma reference laboratory. A single negative result by this assay does not rule-out toxoplasmosis as the specimen may have been collected too early following infection and prior to development of detectable antibodies.
An IgG only positive result indicates recent or past infection with T gondii.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| TXPM | Toxoplasma Ab, IgM, S | Yes | Yes |
| TXPG | Toxoplasma Ab, IgG, S | Yes | Yes |
Testing Algorithm
For more information see Meningitis/Encephalitis Panel Algorithm.
Method Name
Electrochemiluminescence Immunoassay (ECLIA)
Reporting Name
Toxoplasma Ab, IgM and IgG, SSpecimen Type
SerumSpecimen Minimum Volume
0.7 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 21 days |
| Frozen | 90 days | |
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
| Additives (eg, biocides, antioxidants) | Reject |
Reference Values
Toxoplasma IgM
Negative
Toxoplasma IgG
Negative
<1 IU/mL Negative
≥1-<3 IU/mL Borderline
≥3 IU/mL Positive
Reference values apply to all ages.
Day(s) Performed
Monday through Saturday
Report Available
Same day/1 to 3 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86778-Toxoplasma IgM
86777-Toxoplasma IgG