Ordering Recommendation
Aid in diagnosis or monitoring of IgG4-related disease.
Mnemonic
IGG4
Methodology
Quantitative Immunoturbidimetry
Performed
Sun-Sat
Reported
1-3 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Serum separator tube.
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
Grossly hemolyzed or lipemic specimens
Remarks
Stability
After separation from cells: Ambient: Unacceptable; Refrigerated: 14 days; Frozen: 6 months
Reference Interval
Effective February 16, 2021
0-2 years: 1-34 mg/dL
3-4 years: 1-65 mg/dL
5-9 years: 0-168 mg/dL
10-14 year: 1-103 mg/dL
15-18 years: 2-170 mg/dL
19 years and older: 1-123 mg/dL
Interpretive Data
Compliance Category
FDA
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
82787
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0050576 | Immunoglobulin G Subclass 4 | 2469-5 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Class 4 IgG
- Gamma-globulins 4
- IgG class 4
- IgG Subclass 4
Immunoglobulin G Subclass 4