📌 What is the Ammonia Test?
A blood test that measures the level of ammonia (NH₃) in the bloodstream. Ammonia is a waste product formed when the body breaks down protein and is normally processed by the liver and excreted through the kidneys.
📊 Normal Ranges
✔ Adults: 15 - 45 µg/dL (11 - 32 µmol/L) (varies by lab)
✔ Newborns: 90 - 150 µg/dL (higher levels are common in newborns)
🚨 High Ammonia Levels May Indicate:
🔺 Liver disease (e.g., cirrhosis, hepatitis)
🔺 Hepatic encephalopathy (brain dysfunction due to liver failure)
🔺 Urea cycle disorders (genetic conditions affecting ammonia breakdown)
🔺 Kidney disease (impaired ammonia excretion)
📉 Low Ammonia Levels Are Rare but may occur due to certain medications or interventions.
🎯 Purpose of the Test
✅ Evaluates liver function and ammonia clearance
✅ Diagnoses and monitors hepatic encephalopathy
✅ Assesses metabolic disorders in newborns and children
✅ Helps identify kidney dysfunction and severe infections
💡 Key Facts
🔹 Ammonia is toxic to the brain and can cause confusion, tremors, or coma if levels are too high
🔹 Blood sample must be processed quickly, as ammonia levels can change after collection
🔹 Fasting and avoiding strenuous activity before the test can improve accuracy