The Latest from Mayo Clinic Laboratories

As the global reference laboratory for Mayo Clinic, Mayo Clinic Laboratories will help you advance patient care, strengthen your practice, and broaden access to specialized testing. Through our partnerships with clinicians at Mayo Clinic and health care providers around the world, we are able to offer the most sophisticated test catalog in the world. It is because of these daily collaborations that our subspecialized laboratories continue to be a critical component to patient care at Mayo Clinic.




Test Utilization in Dermatopathology: Recent Study Offers Appropriate-Use Criteria for 12 Diagnostic Tests, Focusing on Quality of Patient Care, Safety, and Cost

The exponential increase in the number of diagnostic tests available to physicians (in dermatopathology as well as other medical specialties) can be overwhelming, according to a new multi-institutional study co-published in the Journal of Cutaneous Pathology and American Academy of Dermatology.

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Copeptin [A Test in Focus]

Copeptin (also known as copeptin proAVP or copeptin AVP) and arginine vasopressin (AVP) are derived from the same precursor peptide. Both are affected by osmolar status and increase in response to water deprivation. AVP is the major physiologic determinant of urinary free water excretion or retention. Copeptin proAVP is an improved replacement for AVP testing that is useful as part of differential diagnosis of patients with water balance disorders, including diabetes insipidus (DI) and primary polydipsia, in conjunction with osmolality and hydration status.

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Immunobullous Diseases: Paraneoplastic Pemphigus (PNP)

In this month’s “Hot Topic,” Julia Lehman, M.D., will discuss a rare and potentially fatal mucocutaneous blistering disease that is often associated with an underlying malignancy, called paraneoplastic pemphigus. She will also discuss the specialized tissue and serum testing that is required to establish the diagnosis.

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How to Order Testing

Many hospitals across the country have already established an account with Mayo Clinic Laboratories. Please click on the links below to register for an account or sign-in.


Registration for an account takes less than 10 minutes, and new accounts are typically processed and available in one business day. Once registered, sign in and locate the test in the Test Catalog and click the “Order This Test” button. Follow the prompts to provide billing and contact information. Print the test requisition form to ship with the specimen.


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