Search
Close this search box.

Rheumatoid Factor

Specimen:

Collect

  • One SST

Also Acceptable:
  • One Green Top (Li Heparin)
  • One Lavender (EDTA)
  • One Pink Top (EDTA)
  • One Red Top

Submit

  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable:
  • 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.

Special Handling

  • Allow specimen to clot completely at room temperature
  • Separate from cells ASAP

Rejection Criteria

  • Lipemic Samples

Stability

Ambient: 1 Day(s); Refrigerated: 8 Day(s); Frozen: 3 Month(s); Incubated: Unacceptable

Methodology

  • Turbidimetric

Performed

Mon-Fri

Reported

1-3 Day(s)

CPT Codes

  • 86431

Interpretive Data

General Reference Range : <20 IU/ml

Components

  • 2337 - RHEUMATOID FACTOR
Last Updated: November 12, 2024 @ 10:13 am

Disclaimer:

It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date.
Updated test information can only be guaranteed by using this website.

Choose the Right Test

ARUP Consult® assists with test selection and interpretation

How to Label Your Sample

  • Label Your Test 1
  • Label Your Test 2
  • Label Your Test 3
  • Label Your Test 4
  • Label Your Test 5

Common Test Phrases

  • Label Your Test 1
  • Label Your Test 2
  • Label Your Test 3
  • Label Your Test 4
  • Label Your Test 5

Common Lab Definitions

  • Serum 
  • Plasma 
  • STT