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HelpTest Code LAB659 Toxoplasma gondii Antibody, IgM, Serum
Reporting Title
Toxo IgM
Methodology
Diasorin LIAISON®, Competitive Two-Step Chemiluminescence Assay
Note: Federal Drug Administration (FDA) requires that a Toxoplasma IgG antibody test be ordered along with Toxoplasma IgM. Order #46591 “Toxoplasma gondii Antibody, IgG, Serum” when ordering this test.
Used to aid in the diagnosis of acute, recent, or reactivated Toxoplasma gondii infection.
Performing Laboratory
OhioHealth Laboratory Services-RMH Special Testing
Specimen Requirements
Draw blood in a gold-top or a speckled-top serum gel tube(s). Spin down and send 1 mL (pediatric volume: 0.2 mL) of serum refrigerated.
Note: Plain, red-top tube(s) is also acceptable.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated | 7 days |
| Ambient | ||
| Frozen | Stable |
Specimen Transport Temperature
Refrigerate/Ambient OK/Frozen OK
Reference Values
Negative (reported as positive, negative, or equivocal)
Critical value: Positive
Alerting category: First instance called within 8 hours
Positive Toxoplasma IgM specimen will be sent to a reference laboratory in Palo Alto, CA for confirmation.
IgM antibodies may not appear with reactivated infection. Test results on immunosuppressed patients may be difficult to interpret due to diminished immune response. Positive results may not be valid if patient has received blood in past several months.
Day(s) Test Set Up
Monday through Friday 24/7
Saturday and Sunday day shift only
Test Classification and CPT Coding
86778