IGG3 FITC, IFA

Increase
 
Infections that most often affect people with IgG deficiency are: Sinus infections and other respiratory infections. Gastrointestinal infections. Ear infections.
 
Decrease
 
chronic liver disease e.g. cirrhosis. sarcoidosis. chronic infection. autoimmune disease.
 
Cause
 
The most common causes are hepatitis and other viruses, and alcohol abuse. Other medical problems can also cause it. The damage to the liver usually can't be reversed. The goal of treatment is to slow down the buildup of scar tissue and prevent or treat any problems that happen.
 
Why You Might Need This Test
 
Your doctor might order an immunoglobulin test if you get a lot of infections -- especially infections of the sinuses, lungs, stomach, or intestines.
They may also order the test if you have:
Diarrhea that doesn't go away
Unexplained weight loss
Fevers that can't be explained by another cause
Skin rashes
Allergies
Sickness after traveling
HIV/AIDS or multiple myeloma (a type of cancer), or another condition that needs to be monitored
 
What Do My Results Mean ?
 
The sample will be sent to a lab for testing. This might take a few days.
Depending on your results, the doctor might need to do other tests, such as a:
Complete blood count (CBC)
Protein blood test
Urine test to check for kidney problems