Hello doctor, I am nineteen weeks pregnant. My rubella IgG test was 1.93 positive during my first trimester. But on my anomaly scan some type of infection is seen. So my doctor advised me for rubella IgG avidity test. What is the purpose of this avidity test if already my rubella IgG is done and my report is positive? Are there any chances of rubella infection again after a positive rubella report? Will this have any problem in my child?

Answered by 1 Apollo Doctors

Dr Shaik Kalam

General Practitioner

MD (Physician)
3+ Yrs

Consult Now

Avidity test checks if infection is old or recent. IgG positive alone doesnt confirm timing. A high avidity means past infection and less fetal risk.

Dr. Shaik Suggests...

Take a Rubella (German Measles) Avidity, IgG Test

Book Rubella (German Measles) Avidity, IgG Test

Answered 08/09/2025

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