II. Labs

  1. Normal: 10-80 ug/dl
  2. Send sample on ice and run without delay

III. Causes: Increased Serum Ammonia

  1. Hepatic failure
  2. Hepatic Encephalopathy
  3. Cirrhosis
  4. Reye's Syndrome
  5. Portacaval shunt
  6. Inborn Errors of Metabolism
    1. Urea Cycle Disorders
    2. Protein Metabolism Disorders (Organic acidemia)
  7. Medications
    1. Diuretics
    2. Polymixin B
    3. Methicillin
    4. Valproic Acid (Depakote)
      1. See Valproic Acid Toxicity (includes L-Carnitine protocol)

IV. Causes: Decreased Serum Ammonia

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Ontology: Blood ammonia measurement (C0428437)

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SnomedCT 269993006, 143923002, 166604007
English blood ammonia (lab test), blood ammonia measurement (lab test), ammonia, blood ammonia measurement, blood ammonia, blood ammonia level, ammonia blood levels, blood ammonia level test, ammonia blood level, Blood ammonia (& level), Blood ammonia (& level) (procedure), Ammonia - blood, Blood ammonia level, Blood ammonia measurement (procedure), Blood ammonia measurement
Spanish medición de amonio en sangre, determinación de nivel de amoníaco en sangre, determinación de nivel de amonio en sangre, medición de amoníaco en sangre, medición de amoníaco en sangre (procedimiento), medición de amonio en sangre (procedimiento)

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SnomedCT 167043002, 144284007, 313952006
English plasma ammonia (lab test), plasma ammonia, plasma ammonia level, Plasma ammonia level (procedure), Plasma Ammonia Test, Plasma ammonia level, Plasma ammonia measurement (procedure), Plasma ammonia measurement
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