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From , former About.com Guide

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ENCYCLOPEDIA INDEX
Injury Disease Nutrition Poison Symptoms Surgery Test Special Topic
1 2 5 A B C D E F G H I J K L M N O P Q R S T U V W X

Rheumatoid factor

Overview Risks Results
Alternative Names:
RF
Normal Values:
  • less than 60 u/ml (nephelometric method) or
  • less than 1:80 titer (agglutination method)

Note: U/ml = units per milliliter

Different laboratories might have other reference values.

What abnormal results mean:
A positive test may indicate: Additional conditions under which the test may be performed:
Blood test
Blood test
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