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HelpTest Code LAB206 Rheumatoid Factor
Clinical System Name
Rheumatoid Factor
Synonyms
Rheumatoid Factor Quantitative
RF
Rheum Fact
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Gold Microtainer, Red, EDTA/Lavender, Lt. Green/Lithium Heparin, Dark Green/Sodium Heparin
Preferred Vol: 1.0 mL
Minimum Vol: 0.5 mL
Note:
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: 2-8 C
Storage location: CPA refrigerator, FrigA rack.
Off-site collection: Spin and aliquot serum/plasma in plastic tube. Send refrigerated.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| gel separator with serum/plasma | Refrigerated | 48 h |
| separated serum/plasma | Room temp | 24 h |
| Refrigerated | 7 d | |
| Frozen | 6 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M,Th, day shift | 1-4 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem East
Phone Number: (206) 987-2617
CPT Codes
86431
Methodology
Method: Agglutination by Ortho-Clinical Diagnostics Vitros
Analytical Volume: 0.250 mL serum/plasma
Limitations:
Reference Range
| IU/mL | |
|---|---|
| All ages | < 12 |