If you mean an ammonia blood test, it measures the amount of ammonia (NH₃) in your blood.
Why is an ammonia test done?
It is mainly used to help evaluate:
Liver function, especially severe liver disease or hepatic encephalopathy
Unexplained confusion, drowsiness, or changes in consciousness
Certain inherited metabolic disorders, particularly in children
Occasionally, other conditions that can cause elevated ammonia
Typical preparation
Follow your laboratory/doctor's instructions; some labs recommend fasting.
Avoid strenuous exercise before the test.
The sample generally needs to be handled quickly and kept appropriately chilled, because improper handling can falsely raise the result.
Ammonia levels
Reference ranges vary substantially by laboratory, age, and testing method. Therefore, the reference range printed on your report is the most useful comparison.
An elevated ammonia level can occur with significant liver dysfunction, certain medications, gastrointestinal bleeding, kidney problems, or metabolic disorders. The ammonia value alone does not diagnose liver disease and should be interpreted alongside symptoms and other tests.
If you have an ammonia test report, send me the ammonia value, unit, reference range, age, and symptoms (if any), and I can explain what the result means.in nidan pathology laboratory @location