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Diagnosis

Partially digested Trichinella larvae in bear muscle are still visible in their hardened cysts. Image photographed at 200x.

Squash preparation of bear muscle showing the encysted larvae. Image photographed at 200x. (CDC).

Laboratory confirmation of Trichinella infection is most often by a blood test. In some cases a muscle biopsy may be performed.

A diagnosis of trichinellosis is made in patients whose signs and symptoms are compatible with trichinellosis, have a positive laboratory test for Trichinella antibodies, and who can recall eating raw or undercooked pork or wild game meat.

More on: Resources for Health Professionals: Diagnosis

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