Item Value
Test name Ammonia
Available Stat? Yes (always run STAT)
Turn around times 1 hour
In House Availability Test available 24 hours per day 7 days per week
Performed by Parnassus & Mission Bay Chemistry
Normal range
< 30 days < 50 µmol/L
≥ 30 days < 35 µmol/L


Note: Reference ranges determined by validating the assay manufacturer's reference range in 24 adult laboratory staff and by adapting the newborn reference range from method number 2 in Soldin et al. Pediatric Reference Intervals, 6th edition, 2007
Container type Light Green top (on ice)
Amount to Collect 2 mL blood
Collection Instructions Pre-chill tube. Deliver to lab immediately on ice.

Specimens should be sampled from free flowing blood without the use of tourniquets or heel/finger sticks.

NOTE: Ammonia cannot be 'added-on' to a previously tested sample
Sample type Heparinized plasma

If you have additional questions regarding this test, please call: 415-353-1667