Test Code IGA Immunoglobulin A (IgA)
Specimen Type
Plasma
Container/Tube
Li-Heparin Mint Green Top
Offsite Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be spun and
aliquoted
3. Transport refrigerated (2 – 8C).
Turnaround Time
4 hours
Test Includes
N/A
Preferred Volume
0.5 mL
UCMC Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be received in
Laboratory Service Center
3. Transport room temperature (15 – 25C).
Critical Results
N/A
Test Limitations
It is known that the so-called paraproteins secreted inIt is
known that the so-called paraproteins secreted in monoclonal
gammopathies (monoclonal immunoglobulinemia) may differ from
the
respective immunoglobulins of polyclonal origin by amino acid
composition and size. This may impair the binding to antibody
and
hence impair accurate quantitation.
Fee Code
43055
Synonyms
N/A
Specimen Minimum Volume
0.2 mL
DAY(S) AND TIME(S) PERFORMED
24 hours, 7 days a week including holidays.
STAT DAY(S) AND TIME(S) PERFORMED
N/A
CPT
82784
Method Name
Immunoturbidimetric Assay
Reference Values
Age Value (mg/dL)
> 14Y 100-490
12 100-325
11 91-225
10 70-222
9 108-200
8 74-260
7 65-240
6 83-217
5 52-220
4 52-210
3 45-135
2 36-165
7M 36-165
4M 10-96
1M 6-58
0 < 6
Reject Due To
Whole blood/unspun samples greater than 6 hours will be
rejected.
STAT Turnaround Time
N/A
Test Usage
Increased polyclonal IgA levels may occur in chronic liver
diseases, chronic infections, autoimmune disorders (rheumatoid
arthritis, systemic lupus erythematosis), sarcoidosis and
Wiscott?Aldrich syndrome. Monoclonal IgA increases in IgA
myeloma.
Decreased synthesis of IgA is observed in acquired and
congenital immunodeficiency diseases such as Bruton type
agammaglobulinemia. Reduced levels of IgA can be caused by
protein-losing gastroenteropathies and loss through skin from
burns.
Additional Information
Once per admit.
If monitoring an identified paraprotein, then once per week.
Included in Additional codes
N/A
Coverage Information
N/A
Stability: Room Temp
8 months
Stability: Refrigerated
8 months
Stability: Frozen
8 months