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HelpTest Code RF Rheumatoid factor
Specimen Requirements
Specimen Type: Serum
Container/Tube: Red Top (Plain)
Volume: 6.0mL
Minimum Volume: 0.5mL serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Serum |
|---|---|
| Ambient: | Send the sample to the laboratory immediately |
| Refrigerate: | 2 days |
| Frozen: | 1 month |
Reference Interval
≤30 IU/mL
Days and Times Performed
24 hours, TAT 1 day
Methodology
Immunoturbidimetric
Service Code
31991
Update
Last updated 26/02/2022
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Diagnosis of Rheumatoid Arthritis. Evaluation of ankylosing spondylitis, Sjogren’s symdrome, scleroderma, dermatomyositis, Waldernstrom’s disease and SLE