What does varicella-zoster IgG positive mean?

If testing is done to see if you are at risk of developing an infection and it finds varicella-related immunoglobulin G (IgG) antibodies in your blood, it means you are immune. You have had a chickenpox infection or have been immunized successfully.

What is varicella-zoster IgG normal range?

0.8 AI or less: Negative – No significant level of detectable varicella- zoster IgG antibody. 0.9-1.0 AI: Equivocal – Repeat testing in 10-14 days may be helpful. 1.1 AI or greater: Positive – IgG antibody to varicella-zoster detected, which may indicate a current or past exposure/immunization to varicella-zoster.

Can shingles be detected in a blood test?

What happens during chickenpox and shingles testing? You will need to provide a sample of blood from your vein or from the fluid in one of your blisters. Blood tests check for antibodies to the VZV. Blister tests check for the virus itself.

What is varicella immune status?

The presence of detectable IgG-class antibodies indicates prior exposure to the varicella-zoster virus (VZV) through infection or immunization. Individuals testing positive are considered immune to varicella-zoster. Equivocal: AI 0.9-1.0.

How do you confirm chickenpox?

Doctors generally diagnose chickenpox based on the rash. If there’s any doubt about the diagnosis, chickenpox can be confirmed with lab tests, including blood tests or a culture of lesion samples.

What is a normal varicella test result?

0.90 ISR or less: Negative – No significant level of detectable varicella-zoster virus IgM antibody. 0.91-1.09 ISR: Equivocal – Repeat testing in 10-14 days may be helpful. 1.10 ISR or greater: Positive – Significant level of detectable varicella-zoster virus IgM antibody. Indicative of current or recent infection.

What does a positive varicella IgM mean?

However, an IgM-positive result always signifies a recent infection; therefore, it may be considered that an IgM-positive result reflects a VZV infection. In addition, no comparison was performed between the VZV IgM titer and the clinical symptoms of the patients.

Can I get shingles from my husband?

Transmission. People get shingles when the varicella zoster virus, which causes chickenpox, reactivates in their bodies after they have already had chickenpox. You cannot get shingles from someone who has shingles.