How Simple Tests Can Uncover Hidden Causes of Hypertension
How Simple Tests Can Uncover Hidden Causes of Hypertension
Why It Matters
High blood pressure might be more than just a lifestyle issue; it could be due to primary aldosteronism. Learn about the tests that can reveal this condition.
Contents
- The Role of Hormone Tests
- Confirming the Diagnosis
- Overcoming Testing Challenges
The Role of Hormone Tests
Doctors use blood tests to measure levels of aldosterone and renin, two hormones that regulate blood pressure. In primary aldosteronism, aldosterone levels are high, and renin levels are low. These tests are usually done in the morning when hormone levels can be more accurately assessed. A specific ratio of these hormones helps doctors decide if further testing is needed.
Confirming the Diagnosis
If initial hormone tests suggest primary aldosteronism, doctors may perform additional tests to confirm it. This often involves tests that challenge the body's aldosterone production, like a saline infusion test or an oral sodium loading test. These confirmatory tests help ensure that the diagnosis is accurate, preventing unnecessary treatments.
Overcoming Testing Challenges
Testing for primary aldosteronism can be tricky because some medications can interfere with hormone levels. Doctors often continue most blood pressure medications during testing, though some may need to be paused. It’s crucial to follow medical advice closely to ensure test accuracy and avoid false results.
FAQs
What tests detect primary aldosteronism?
Blood tests measuring aldosterone and renin levels are used.
Why are hormone levels measured in the morning?
Morning levels provide more accurate assessments of these hormones.
What if the initial tests are negative?
Doctors may repeat tests due to variability in hormone levels.
Key Takeaways
Could a simple test reveal the true cause of your high blood pressure?
Additional References
- Funder JW, et al. J Clin Endocrinol Metab 2016; 101:1889.
- Brown JM, et al. Ann Intern Med 2020; 173:10.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic.