Rheumatoid Factor
General Information
- Lab Name
- Rheumatoid Factor
- Lab Code
- RF
- Epic Name
- Rheumatoid Factor
- Synonyms
- Latex, RF
- Components
Interpretation
- Guidelines
- Method
- Turbidimetric
- Reference Range
-
Units: IU/mL
Female Male Age Range Age Range 0- <15 0- <15 Effective date: 01/04/2016
Ordering & Collection
- Specimen Type
- Blood
- Collection
-
Preferred: 4 mL blood in GOLD SST or LIME GREEN PST tube
Also Acceptable: 4 mL blood in RED TOP, ORANGE TOP, GREEN TOP, or LAVENDER TOP tube - Handling Instructions
The laboratory must process the specimen within 2 hours of collection.
- Quantity
-
Requested: 1 mL serum/plasma
Minimum: 0.5 mL serum/plasma
Processing
- Receiving Instructions
Separate plasma/serum within 2 hours of collection and refrigerate. Avoid repeated freezing and thawing Stability: Room Temperature: up to 1 day; Refrigerated: 8 days; Frozen at -20°C: 3 months
- Misc Sendout
Performance
- Lab Department
- Chemistry, Automated Panels(CHA)
- Frequency
- Daily
- Available STAT?
- No
- Performing Location(s)
-
UW-MT Chemistry, Automated
206-520-4600Clinical Lab, Room NW220,
University of Washington Medical Center,
1959 NE Pacific street, Seattle, WA 98195
Billing & Coding
- CPT Codes
- 86431
- LOINC
- 11572-5
- Interfaced Order Code
- UOW2568
- Interfaced Result Code
- UOW2568