Immunoglobulin G Subclasses (IgG Subclasses)
|
Assay |
Immunoglobulin G subclasses |
|
Key Words |
IgG4 (Sublass), IGG4 IgG Subclasses , IGSU |
|
Specimen Collection |
Serum (brown) |
|
Turnaround time |
5 days This test is referred to another centre: Department of Clinical Chemistry and Immunology, Level 4 Addenbrookes Hospital NHS Trust Hills Road |
|
Test indications |
IgG subclasses are not available as a routine assay. Although it was initially thought that IgG subclass deficiencies explained infections in patients with normal total IgG levels, the link is now disputed. Testing for antibody levels against specific pathogens has now superseded IgG subclass testing except for a few rare indications such as diagnosing lymphocytic pancreatitis. All IgG subclass tests requests should be discussed with the laboratory in advance. |
|
Methodology |
Nephelometric |
|
Interferences |
Contact referral centre |
|
Reference Range |
IgG4 adult normal range: 0.00 – 1.3 g/L |
|
Analytical error |
Contact referral centre |
|
Reference change value |
N/A |
