Immunoglobulin A (IgA), Individual Quant
| Label Mnemonic: | IGA |
| Epic code: | LAB73 |
| Order form: | Laboratory Requisition |
| Supply order: | Supply Order Form |
| Billing: | Billing Policies |
| CPT code: | 82784 |
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
Sample Processing:
Centrifuge at a speed and time necessary to get barrier separation
of plasma/serum and cells within 1 hour of collection. Send specimen
in original tube. Do Not transfer to another tube.
Each sample must be labeled with at least TWO full patient identifiers (First/Last Name & DOB are sufficient for non-UIHC affiliated clients) to avoid sample rejection/delays.
Each sample must be labeled with at least TWO full patient identifiers (First/Last Name & DOB are sufficient for non-UIHC affiliated clients) to avoid sample rejection/delays.
Sample Storage:
Refrigerate.
All sample storage requirements are intended for delivery to UIHC within 24 hours of collection for testing. If samples won't arrive in this time period, please call the UIHC Core Lab for alternative storage/shipping instructions (319-356-3527).
All sample storage requirements are intended for delivery to UIHC within 24 hours of collection for testing. If samples won't arrive in this time period, please call the UIHC Core Lab for alternative storage/shipping instructions (319-356-3527).
Transport Instructions:
Place labeled specimen into zip-lock type biohazard bag; seal
bag.
Place completed requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.
Place completed requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.