Mayo Clinic Health Library

Endocrine system

  • A1C test

    A1C test — Overview covers definition, preparation, results of this diabetes blood test.

  • Creatinine test

    Creatinine test — Overview covers definition, preparation, results of this common blood test.

  • Glucose tolerance test

    Glucose tolerance test — Overview covers definition, preparation, results of this diabetes blood test.

  • Thyroid peroxidase antibody test: What is it?

    A thyroid peroxidase antibody test can help determine the cause of thyroid disease.