TOXOPLASMA AVIDITY TEST

The TOXOPLASMA AVIDITY TEST measures the strength (avidity) of Toxoplasma gondii-specific IgG antibodies in a blood sample to help distinguish recent infection from past exposure. Low IgG avidity suggests a recent infection, whereas high avidity indicates an older, resolved infection; this distinction is critical in pregnancy because primary maternal infection can transmit to the fetus and cause serious outcomes.

This test is most useful when used alongside IgM/IgG serology and clinical assessment — for example, when a pregnant woman has a positive or equivocal IgM result or documented exposure risk. Samples can be collected at home by trained phlebotomists in Dubai and processed in accredited UAE laboratories, with results typically reported as an avidity index and clinical interpretation to guide obstetric management and counseling.

• Toxoplasma gondii IgG Avidity Index (%)
• Toxoplasma gondii IgG Antibody (qualitative/quantitative)
• Toxoplasma gondii IgM Antibody (if requested)
• Avidity Interpretation (low / intermediate / high)

• Pregnant women with positive or equivocal Toxoplasma IgM
• Recent exposure or symptoms after contact with cats or undercooked meat
• Preconception counselling to clarify prior infection timing
• Abnormal fetal ultrasound findings suggesting possible congenital infection
• Immunocompromised patients with suspected acute toxoplasmosis

• Distinguishes recent versus past Toxoplasma infection to inform care
• Supports timely obstetric decisions and fetal risk assessment
• Reduces unnecessary interventions and parental anxiety with clearer timing
• Convenient at-home blood collection available across Dubai and the UAE
• Results provided with clinical interpretation to aid physician management

• At-home venous blood sample collection (serum preferred)
• No fasting required prior to sample collection
• Provide any previous Toxoplasma serology or maternity records if available
• Physician referral or clinical context recommended for accurate interpretation