Preferred Specimen(s) 1.0 mL Serum
Instruction Overnight fasting is preferred
Transport Container Plastic Screw cap vial
Transport Temperature
- Ambient 7 days,
- Refrigerated 14 days
Reject Criteria
- Gross hemolysis,
- lipemic
Methodology Nephelometry
Clinical Significance Patients with low concentrations of IgG may have a wide variety of respiratory illnesses including recurrent otitis media, sinusitis, pneumonia, chronic obstructive airway disease, bronchiectasis, and asthma. Measurement of IgG may be useful in monitoring patients being treated for IgG monoclonal gammopathies and during replacement with intravenous immunoglobulins.