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Quick Answer. A personâs normal ammonia level typically ranges between 15 to 45 micrograms per deciliter. To determine these levels, an ammonia blood test is performed.
The tubes are available in different ranges 1-30 ppm, 5-100 ppm, and 25 - 500 ppm. The lower range offers very precise measurement in low ammonia situations. The. 5-100 ppm range tubes allow for a wider range of ammonia conditions and can be. used to determine ammonia concentration to approximately 5 ppm level.