Ammonia Levels Procedure

The ammonia levels test, also known as the ammonia blood test, is a medical procedure used to measure the amount of ammonia in the blood.

Purpose

The purpose of this test is to diagnose and monitor conditions that affect the liver, kidneys, and brain, such as:

• Liver disease or damage
• Kidney disease or failure
• Reye's syndrome, a rare but serious condition that causes swelling in the liver and brain
• Other metabolic disorders

How the Test is Performed

A healthcare provider will typically perform the following steps:

1. A blood sample is taken from a vein, usually in the arm or hand.
2. The blood sample is sent to a laboratory for analysis.
3. The laboratory uses specialized equipment to measure the amount of ammonia in the blood.

Preparation

To prepare for the test:

• Avoid eating or drinking for at least 8 hours before the test.
• Tell your healthcare provider about any medications you are taking, as some may affect the results of the test.

Results

The normal range for ammonia levels in the blood is typically between 10-50 micromoles per liter (μmol/L). Elevated levels may indicate a problem with the liver or kidneys, while low levels are generally not a cause for concern.

Risks and Complications

As with any blood test, there is a small risk of:

• Bleeding or bruising at the needle site
• Infection
• Fainting or dizziness

Follow-up

If your ammonia levels are abnormal, your healthcare provider may order additional tests to determine the cause and develop a treatment plan.