Quick Answer: What Is Normal Ammonia Levels In Blood?

The normal range is 15 to 45 µ/dL (11 to 32 µmol/L).

Normal value ranges may vary slightly among different laboratories.

What is a high ammonia level?

High ammonia levels sometimes point to either liver or kidney disease. But several other things can cause higher ammonia levels, like: Bleeding in your stomach, intestines, esophagus, or other parts of your body. Alcohol and drug use, including narcotics and medicines that take extra fluid out of your body (diuretics)

How do I know if my ammonia levels are high?

An ammonia test may be order when you experience signs and symptoms of an elevated ammonia level, such as:

  • Mental changes, disorientation.
  • Sleepiness.
  • Change in consciousness.
  • Coma.

How do you lower ammonia levels in your blood?


  1. Lactulose to prevent bacteria in the intestines from creating ammonia. It may cause diarrhea.
  2. Neomycin and rifaximin also reduce the amount of ammonia made in the intestines.
  3. If the HE improves while taking rifaximin, it should be continued indefinitely.

Can high ammonia levels lead to death?

Many serious illnesses, including liver damage, can cause blood ammonia levels to rise. High levels of ammonia can cause patients to become confused and die, if left untreated. It has been demonstrated previously that two of these patients lacked a liver enzyme that helps to metabolize ammonia.

What is a critical ammonia level?

Adult: 10-80 mcg/dL or 6-47 μmol/L (SI units) Child: 40-80 mcg/dL. Newborn: 90-150 mcg/dL. Ammonia: < 50 mcg/dL paracentesis fluid. Ammonia cerebrospinal fluid (CSF) level: 10-35 mg/dL (5.87-20.5 mmol/L)

What removes ammonia from the body?

Ammonia is a chemical made by bacteria in your intestines and your body’s cells while you process protein. Your body treats ammonia as a waste product, and gets rid of it through the liver. It can be added to other chemicals to form an amino acid called glutamine.

How long does lactulose take to reduce ammonia levels?

It may take 24–48 hours for this drug to work. For portal-systemic encephalopathy: You should have two or three soft stools per day. High ammonia levels caused by the condition are removed from your body through your stool.

How does ammonia affect the brain?

Elevated concentrations of ammonia in the brain as a result of hyperammonemia leads to cerebral dysfunction involving a spectrum of neuropsychiatric and neurological symptoms (impaired memory, shortened attention span, sleep-wake inversions, brain edema, intracranial hypertension, seizures, ataxia and coma).

Can high ammonia levels cause permanent brain damage?

Your liver removes toxic chemicals such as ammonia from your body. When your liver is damaged, it’s unable to filter out all the toxins. Toxins can then build up in your bloodstream and potentially get into your brain. Toxic buildup can also damage other organs and nerves.