Rheumatoid Factor (IgM)
Order Code:
RFIGM
Test Summary
In conjunction with clinical findings and other laboratory tests, the presence of rheumatoid factor (RF) can be used to aid in the diagnosis of rheumatoid arthritis.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
Overnight fasting is preferred
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 48 hours
- Refrigerated: 8 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Gross lipemia • Grossly icteric • Heat treated samples • Serum separator tube (SST®)
Order Code
RFIGM
EPIC (Premier) Code
LAB5876
Includes
N/A
CPT Code
- 83520
Billing Code
- 671034
CPT Statement
Methodology
Immunoassay (IA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
| ≤6 Negative |
| >6 Positive |
Setup Schedule / Expected Turnaround Time
Tuesday, Saturday; Report available: 1 - 4 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
Overnight fasting is preferred
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 48 hours
- Refrigerated: 8 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Gross lipemia • Grossly icteric • Heat treated samples • Serum separator tube (SST®)
Result Information
Methodology
Immunoassay (IA)
Testing Laboratory
N/A
Reference Range
| ≤6 Negative |
| >6 Positive |
Setup Schedule / Expected Turnaround Time
Tuesday, Saturday; Report available: 1 - 4 days