Immunoglobulin A (IgA), Individual Quant

Label Mnemonic:	IGA
Epic code:	LAB73
Downtime form:	A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Chemistry
6240 RCP
356-3527

Specimen(s):

Plasma

Collection Medium:

Plasma Separator Tube 4.5 mL

Alternate Collection Media:

Call laboratory for additional acceptable specimen collection containers.

Minimum:

3 mL whole blood from light green top tube or ONE Microtainer^®

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Turn Around Time:

1 hour (upon receipt in laboratory)

Reference Range:

70-400 mg/dL

Children and Juveniles
 0-1 year      0-83 mg/dL
 1-3 years   20-100 mg/dL
 4-6 years   27-195 mg/dL
 7-9 years   34-305 mg/dL
10-11 years  53-204 mg/dL
12-13 years  58-358 mg/dL
14-15 years  47-249 mg/dL
16-19 years  61-348 mg/dL
20-adult     70-400 mg/dL

Comments:

Refer to BD Microtainer^® Tubes product sheet for detailed sample collection instructions.

Test Limitations:

Criterion: Recovery within plus or minus 10% of initial value.

Icterus: No significant interference up to an I index of 60 
(approximate conjugated and unconjugated bilirubin concentration: 60 
mg/dL).

Hemolysis: No significant interference up to an H index of 1000 
(approximate hemoglobin concentration: 1000 mg/dL).

Lipemia (Intralipid): No significant interference up to an L index of 
2000). There is poor correlation between turbidity and triglycerides 
concentration.

There is no cross-reaction between IgA and IgG or IgM under the assay 
conditions.

Plasma with ill-defined characteristics should be subject to protein 
electrophoresis to identify a possible antigen excess (e.g. 
gammopathy).

A high-dose hook effect may occur at concentrations above 12,000 mg/dL 
(120 g/l).

Methodology:

Immunoturbidimetric

CPT Code:

82784