Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Weil Felix test
Introduction
The Weil-Felix test is a test for the presence and type of rickettsial disease based on the agglutination of OX-strains of Proteus vulgaris with suspected rickettsia in a patient’s blood serum. It is a heterophile agglutinition reaction. The non-motile Proteus strains used are OX-2, OX-19, and OX-K.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]