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TEST ID TXPG Toxoplasma gondii Antibody, IgG, Serum


Ordering Guidance


IgG antibodies in patients younger than 6 months of age are typically the result of passive transfer from the mother. To assess possible Toxoplasma gondii infection in patients younger than 6 months, order TXPM / Toxoplasma gondii Antibody, IgM, 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: 0.6 mL

Collection Instructions: Centrifuge and aliquot serum into plastic vial


Useful For

Quantitative detection of IgG antibodies to Toxoplasma gondii.

 

This test is not useful for diagnosing infection in infants younger than 6 months of age. In that age group, IgG antibodies usually are the result of passive transfer from the mother.

Highlights

Detection of IgG-class antibodies to Toxoplasma gondii may be useful to assess the serological status of T. gondii. Presence of IgG antibody may be indicative of a latent or acute infection.

Method Name

Electrochemiluminescence Immunoassay (ECLIA)

Reporting Name

Toxoplasma Ab, IgG, S

Specimen Type

Serum

Specimen Minimum Volume

0.6 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

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 days

Specimen Retention Time

14 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

86777

Forms

If not ordering electronically, complete, print, and send an Infectious Disease Serology Test Request (T916) with the specimen.