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16 sty 2023 · Higher than normal blood ammonia levels are called hyperammonemia. Acceptable levels depend on age and sex but range from about 100 µmol/L in infants to 16 µmol/L adults assigned male...
Ammonia is highly toxic. Blood ammonia levels are usually less than 50 micromoles per liter (micromol /L), but this can vary depending on age. An increase to only 100 micromol /L can lead to changes in consciousness. A blood ammonia level of 200 micromol /L is associated with coma and convulsions.
The lower limit of the reference range is 10-20 μmol/L. The upper limit of the reference range is 35-65 μmol/L.
Optimal Result: 36 - 136 ug/dL. Interpret your laboratory results now. Get Started. Ammonia measurements are mainly of use in the diagnosis of urea cycle deficiencies (any neonate with unexplained nausea, vomiting, or neurological deterioration appearing after first feeding), and they play an important part in the detection of Reye syndrome.
The normal range is 15 to 45 µ/dL (11 to 32 µmol/L). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different samples. Talk to your provider about the meaning of your specific test results.
An ammonia levels test measures the amount of ammonia (NH3) in your blood. High ammonia levels can cause serious brain damage and coma. Learn more.
Peak ammonia level is a good predictor of the severity of illness. A level greater than 300 mcg/dL indicates a poor prognosis. Ammonia levels should be obtained daily during acute Reye's syndrome.
