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Last reviewed: 20 Apr 2025
Last updated: 09 May 2025

Summary

Definition

History and exam

Key diagnostic factors

  • hypertension
  • presence of risk factors

Other diagnostic factors

  • age 20 to 70 years
  • nocturia, polyuria
  • lethargy
  • mood disturbance (irritability, anxiety, depression)
  • difficulty concentrating
  • paraesthesias, muscle cramps
  • muscle weakness
  • palpitations

Risk factors

  • family history of PA
  • family history of early onset of hypertension and/or stroke

Diagnostic investigations

1st investigations to order

  • plasma potassium
  • aldosterone/renin ratio

Investigations to consider

  • oral salt loading test
  • saline infusion testing
  • genetic testing
  • adrenal CT
  • adrenal venous sampling
  • adrenal MRI
  • posture stimulation testing
  • angiotensin II infusion testing
  • 24-hour urinary hybrid steroids (18-hydroxy- and 18-oxo-cortisol)
  • dexamethasone suppression testing

Emerging tests

  • ¹¹ C-Metomidate PET/CT

Treatment algorithm

Contributors

Authors

Michael Stowasser, MBBS, FRACP, PhD
Michael Stowasser

Professor

Endocrine Hypertension Research Centre

University of Queensland Frazer Institute

Greenslopes and Princess Alexandra Hospitals

Brisbane

Queensland

Australia

Disclosures

MS is an author of several references cited in this topic.

Acknowledgements

Professor Michael Stowasser would like to gratefully acknowledge Professor Richard D. Gordon, a previous contributor to this topic.

Peer reviewers

Paolo Mulatero, MD

Department of Medicine and Experimental Oncology

Division of Medicine and Hypertension

San Giovanni Battista Hospital

Torino

Italy

Disclosures

PM declares that he has no competing interests.

Wail Malaty, MD

Clinical Professor

Department of Family Medicine

University of North Carolina

Chapel Hill

Assistant Program Director

MAHEC Rural Family Medicine Residency

Hendersonville

NC

Disclosures

WM declares that he has no competing interests.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Mulatero P, Sechi LA, Williams TA, et al. Subtype diagnosis, treatment, complications and outcomes of primary aldosteronism and future direction of research: a position statement and consensus of the Working Group on Endocrine Hypertension of the European Society of Hypertension. J Hypertens. 2020 Oct;38(10):1929-36. Abstract

Reincke M, Bancos I, Mulatero P, et al. Diagnosis and treatment of primary aldosteronism. Lancet Diabetes Endocrinol. 2021 Dec;9(12):876-92. Abstract

Funder JW, Carey RM, Mantero F, et al. The management of primary aldosteronism: case detection, diagnosis, and treatment: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2016 May;101(5):1889-916.Full text  Abstract

Young WF Jr. Diagnosis and treatment of primary aldosteronism: practical clinical perspectives. J Intern Med. 2019 Feb;285(2):126-48.Full text  Abstract

Reference articles

A full list of sources referenced in this topic is available here.

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