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Angioedema Panel, Hereditary, Comprehensive
Test Code17706
CPT Codes
86161, 86160 (x2)
Includes
C1 Esterase Inhibitor, Functional
Complement Component C4c
C1 Esterase Inhibitor, Protein
Complement Component C4c
C1 Esterase Inhibitor, Protein
Preferred Specimen
3 mL frozen serum collected in a red-top tube (no gel)
Patient Preparation
Overnight fasting is preferred
Minimum Volume
1.2 mL
Instructions
Freeze serum within one hour of collection.
Do not submit the sample in a glass tube. Do not thaw.
Do not submit the sample in a glass tube. Do not thaw.
Transport Container
Plastic screw-cap vial
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 21 days
Refrigerated: Unacceptable
Frozen: 21 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Lipemia • Received at room temperature
Methodology
Immunoassay (IA) • Immunoturbidimetry • Nephelometry
Setup Schedule
Set up: Tues, Sat; Report available: 1-3 days
Limitations
Patients taking anabolic steroids may have falsely elevated C4 values.
Reference Range
See individual tests
Clinical Significance
This panel is designed to assist in the diagnosis of hereditary angioedema.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153