How is typhoid fever diagnosed?

Doctors use a simple blood or stool test to diagnose typhoid fever. This test identifies the presence of Salmonella typhi in blood or stool samples.

In the U.S., doctors may not consider typhoid fever at first because it is uncommon. It’s important to tell your doctor if you have traveled to an area where typhoid fever could be present or if you think you’ve been exposed to someone who could have the infection.

Last reviewed by a Cleveland Clinic medical professional on 03/01/2018.


  • Centers for Disease Control and Prevention. Typhoid Fever. Accessed 3/19/18.
  • World Health Organization. Typhoid. Accessed 3/19/18.
  • National Organization for Rare Disorders. Typhoid. Accessed 3/19/18.

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