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Test Code RF Panel Rheumatoid Factor Panel

Useful For

Aids in the diagnosis of Rheumatoid Arthritis

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

2 mL

Container

Gold Top Serum Separator

Preferred Specimen

Serum

Acceptable Specimens

Serum:

  • Gold Top SST
  •  
  • Red Top


Plasma:

 

  • Light Geen Top (lithium heparin)

 

Reference or Target Ranges

RF IgA <20
RF IgM <5

Reportable Units

RLU

Critical Value

Not defined for this assay

Reasons for Rejection

Hemolysis Threshold N/A
Icterus Threshold N/A
Lipemia Threshold N/A
Other QNS, contaminated, improperly labeled, improper specimen type

Specimen Stability

Ambient 48 Hours
Refrigerated (4°C to 8°C) 14 Days
Frozen(-70°C to 0°C) Indefinitely

Performance Information

Days and Time Performed Monday – Friday 7 AM – 4 PM
Expected Turn Around Time Within 7 days of arrival in lab
Stat Availability No
Performing Bench ANA
Methodology/Method Description Bioflash – Chemilluminescence

CPT Codes

82397 x2

Panel Components

  • RF IgA
  • RF IgM