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Beaumont Laboratory

Toxoplasma gondii by PCR


Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube, Gold-top SST tube, or Lavender-top EDTA tube.
Also acceptable: Amniotic fluid, Cerebrospinal fluid (CSF), Ocular fluid, or biopsy tissue in a sterile container.

  • Specimen source is required.
  • Tissue specimens must be frozen immediately.

Physician Office/Drawsite Specimen Preparation

  • Blood: Centrifuge to separate serum or plasma from cells. Transfer serum or plasma to a plastic transport tube and freeze (-20°C/-4°F or below).
  • Fluid: Maintain specimens in a sterile container and freeze (-20°C/-4°F or below).
  • Tissue: Place specimen in a sterile container and freeze (-20°C/-4°F or below) immediately.

Preparation for Courier Transport

Transport: 1.0 mL serum, plasma, fluid, or tissue frozen (-20°C/-4°F or below). (Min: 0.5 mL)

Rejection Criteria

  • Specimens not collected and processed as indicated.


Specimen Stability for Testing:


Room temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): 3 months

All Other Specimens
Room temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 5 days
Frozen (-20°C/-4°F or below): 3 months

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions. 


Sent to ARUP Laboratories, Salt Lake City, UT.


Tuesday, Friday.
Results available within 2-6 days.

Reference Range

Negative: Toxoplasma gondii DNA not detected by PCR.
Positive: Toxoplasma gondii DNA detected by PCR.

Test Methodology

Qualitative Polymerase Chain Reaction (PCR).


  • A negative result does not rule out the presence of PCR inhibitors in the patient specimen. Toxoplasma gondii DNA concentration below the level of detection by the assay.
  • The performance characteristics of this test were validated by ARUP Laboratories, Inc. The U.S. Food and Drug Administration (FDA) has not approved this test. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. ARUP is authorized under Clinical Laboratory Improvement Amendments (CLIA) and by all states to perform high-complexity testing.
  • This test is performed pursuant to an agreement with Roche Molecular Systems, Inc.


Toxoplasmosis occurs worldwide. Asymptomatic infections are common. Serological surveys show that 7 to 80% of various populations are infected. The developing fetus and immunocompromised patients are at risk for severe disease (1).

CPT Code


Test Codes


Last Updated


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UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.

This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.