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Toxoplasma gondii Antibody, IgM (8000100329)
Test Mnemonic:
Specimen Requirements:

Serum separator tube (SST) 


Serum separator tube (SST)

Minimum Volume:

1mL of serum


Refrigerate (2-8°C) up to 7 days; Samples should be frozen (<-20°C)

Specimen Preparation:

Within 2 hours of collection, centrifuge 


Refrigerate (2-8°C) up to 7 days; Samples should be frozen (<-20°C)

Causes for Rejection:

Insufficient quantity, gross hemolysis, lipemia, specimen container unlabeled or labeled incorrectly, no date or time of collection on order. 

Reference Range:


Turnaround Time:

Test performed daily, Sunday through Friday


Multiplex bead immunoassay


Clinical Microbiology


Toxoplasma antibody, IgM, TOXOM

Clinical Indication:

Screen for TOXO antibodies, IgM

Patient Preparation :

Routine venipuncture

CPT 4 Code:



Negative - No anti-Toxoplasma gondii IgM detected. A negative IgM result may be due to delayed seroconversion and does not rule out current infection.

Equivocal - A second sample should be sent.

Positive - Indicative of a current or recent infection with Toxoplasma gondii.  False positive results may occur.   The results of the test must be taken within the context of the patient's clinical history, symptomology, and other laboratory findings.

For additional information, refer to the CDC website ( or to PAMF website (

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
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