Testing for MH

HAVING SURGERY?  If there is a question of MH susceptibility and a biopsy has not been done, the patient should be managed as if known to be MH susceptible, and a non-triggering anesthetic technique used.

NEW:  Also see our new web page and PDF document, "I Have MH - Now What? A Roadmap To Answers"

There are two types of testing for Malignant Hyperthermia: genetic testing and muscle biopsy. Consult with a genetic counselor to determine the type of test that is best for your situation.

Refer to this slide presentation, video, and links below for more information.

Genetic Testing

Can be performed by mail. Consult with your doctor. Refer to the following: 

  • Molecular Genetics Test Genetic testing is often helpful in determining whether a patient is predisposed to a medical condition. However, as with any test, either the patient or his/her insurance company must pay for the test. The cost of the test varies depending on the amount of work involved and on the fee schedule of the laboratory.
  • Testing Centers

Muscle Biopsy - Caffeine Halothane Contracture Test (CHCT)

CANNOT BE PERFORMED BY MAIL. Patient must travel to an approved testing center. Refer to the following:

  • Caffeine Halothane Contracture Test (CHCT) Muscle biopsies for CHCT must be performed at one of the designated CHCT testing centers because the test must be performed on fresh tissue. CHCT cannot be performed on muscle samples sent via the mail.
  • Current Procedural Terminology (CPT) Codes Current Procedural Terminology (CPT) Codes codes are numbers assigned to every task and service a medical practitioner may provide to a patient including medical, surgical and diagnostic services. These are the codes used to describe the Caffeine Halothane Contracture Test.
  • Muscle Biopsy Video Actual muscle biopsy with captions.
  • Testing Centers


Take part in MH research by submitting your MH test results to the North American Malignant Hyperthermia Registry, the research arm of MHAUS.












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