Test directory: Ammonia

Ordering Code460
Test NameAmmonia
AliasNH3
Preferred SpecimenPlasma
Preferred ContainerEDTA, K2 (Lavender)
Other Specimen/ContainerNone
Optimum Volume1 mL
Collection InstructionsDraw full tube. Immediately after collection, place tube in wet ice.
Handling InstructionsQMC draws: Send tightly capped specimen on wet ice to the testing lab within 1 hour of draw
Other draw sites: Immediately after collection, centrifuge specimen (capped) to separate, aliquot and freeze.
Transport RequirementsOahu: Frozen
Airline: Frozen
Specimen StabilityAmbient: 30 Minutes
Refrigerated: 2 Hours
Frozen at -15 to -25 C: 3 Days
Frozen at -60 to -90 C: At least 4 weeks
Rejection CriteriaInsufficient quantity, Specimen older than stability limits,
Specimen/aliquot tube not capped or loosely capped, Moderate hemolysis, Specimen not frozen, Specimen not on ice
Avail. StatYES
Analytic Time1 Day
MethodologyEnzymatic - glutamate dehydrogenase (GLDH)

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
AmmoniaALL12-4112-41umol/L