Description of blood Analysis:

Aldosterone is a steroid hormone produced by the adrenal cortex that plays a central role in regulating the body’s electrolytic balance and blood pressure. Its primary function is to signal the kidneys to retain sodium and excrete potassium. This process directly influences the volume of water retained in the bloodstream, which in turn determines blood pressure levels. In clinical practice, measuring aldosterone is essential for identifying disorders of the adrenal glands and investigating the underlying causes of resistant hypertension (high blood pressure that does not respond to standard treatments) or unexplained low potassium levels.

What does the analysis represent?

• Purpose: To quantify the concentration of the hormone responsible for sodium-potassium balance and blood pressure regulation.
• Primary Application: Diagnosing primary aldosteronism (Conn’s syndrome), evaluating adrenal gland function, and investigating the causes of secondary hypertension.
• Method: Radioimmunoassay (RIA) or Chemiluminescent Immunoassay (CLIA) using a venous blood sample.

Recommendations for the Test (General)

• Timing: Typically drawn in the morning. The patient may be required to remain in a specific position (either standing for 2 hours or lying down) before the draw, as posture significantly affects levels.
• Fasting: A 10–12 hour fast is usually required; water is permitted.
• Rest: Avoid intense physical exertion for 24 hours prior to the test.
• Specific Rules: Salt intake must be standardized (often a normal-sodium diet for 2 weeks) as directed by the physician. Some blood pressure medications may need to be discontinued several weeks in advance.

What can affect the results?

• Factors altering levels: Posture (upright vs. supine), dietary salt intake, and stress levels during the blood draw.
• Conversely: Many medications, including diuretics, ACE inhibitors, beta-blockers, and oral contraceptives, can significantly alter aldosterone concentrations.

When to take the test?

• Recommendations: This test is recommended for patients with high blood pressure that is difficult to control, especially if accompanied by low blood potassium (hypokalemia).
• Preparation: It is crucial to follow the specific instructions provided by the endocrinologist regarding medication and diet to ensure the validity of the results.

How to interpret the results?

• The interpretation of your laboratory results is the exclusive responsibility of a qualified physician.
• An aldosterone value should not be viewed in isolation; it is most meaningful when compared to plasma renin activity (the Aldosterone-to-Renin Ratio, or ARR).
• Only a professional medical review can integrate these findings with your clinical history to determine if an adrenal tumor or other condition is present.

Possible further investigations

• Plasma Renin Activity (PRA): To calculate the ratio necessary for diagnosing primary aldosteronism.
• Adrenal CT Scan: To physically check for the presence of nodules or enlargement of the adrenal glands.
• Electrolytes (Sodium/Potassium) Panel: To assess the physiological impact of aldosterone levels.
• Endocrinology Consultation: To develop a specialized diagnostic and treatment plan.

When does the next step make sense?

• If aldosterone levels or the aldosterone-to-renin ratio are elevated, the findings are reviewed by a physician to determine if further confirmatory testing (such as a salt loading test) or imaging is required.
• All medical decisions are personalized based on the patient’s clinical presentation.

👉 If necessary, you can discuss the analysis results with a specialist such as an endocrinologist (Doctors – TAMC) or a nephrologist (Doctors – TAMC)