Immunoglobulin G Subclass 4
0050576
 
Ordering Recommendation
Mnemonic
IGG4
Methodology
Quantitative Nephelometry
Performed
Mon-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 or green (sodium or lithium heparin).  
Specimen Preparation
Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.45 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
 
Remarks
 
Stability
After separation from cells: Ambient: 2 hours; Refrigerated: 8 days; Frozen: 6 months  
Reference Interval
Cord blood: 1-47 mg/dL 5-6 years: 2-116 mg/dL
0-2 months: 1-33 mg/dL 7-8 years: 0-138 mg/dL
3-5 months: 1-14 mg/dL 9-10 years: 1-95 mg/dL
6-8 months: 1-16 mg/dL 11-12 years: 1-153 mg/dL
9-23 months: 1-65 mg/dL 13-14 years: 2-143 mg/dL
2 years: 0-120 mg/dL 15 years and older: 7-89 mg/dL
3-4 years: 0-90 mg/dL
Interpretive Data
Note
CPT Code(s)
82787
Components
Component Test Code*Component Chart Name
0050576Immunoglobulin G Subclass 4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • IgG Subclass 4