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Test Code LAB721 Ammonia, Blood Level

Important Note

If Outpatient Ammonia is needed, the patient must be collected at the 35 Michigan Draw Site or at one of the Regional Hospital Main lab sites.

Test Name Alias

Ammonia Blood Level | NH3 Blood Level | 8074

Icons & Photos


Collection Instructions

Specimen Collection: Blood


Container(s): 3.0 mL Lavender top (EDTA)

Preferred Volume to Collect: 3.0 mL

Minimum Volume to Collect: 2.0 mL

Neonate Volume to Collect: 1.0 mL

Capillary collect ok: No

Microtainer acceptable: No


Collection Instructions:

  • Smoking should be avoided prior to sampling

  • Do not use tourniquet

  • Tube should be filled completely

  • After collection, gently invert tube 8-10 times

  • Avoid prolonged exposure to air.
  • Deliver on ice.
  • Deliver to lab immediately. Tube must be processed (centrifuged/spun) within 15 minutes --  See processing instructions below

NOTE: Spectrum Health Continuing Care - Fuller and Kalamazoo: Please follow "Standard Work" instructions. Specimen must be spun, separated, frozen and transported on dry ice. Specimen must only be picked up by Spectrum Health Courier during scheduled pickups. This specimen cannot be picked up as a STAT, during afterhours or via 3rd party courier (i.e. Reliable Delivery).

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Plasma


Centrifuge/Spin: Yes

Aliquot: Yes


Processing Instructions:

  • Tube must be centrifuged immediately (within 15 minutes).
  • Remove plasma and freeze in separate plastic vial.
  • Avoid prolonged exposure to air.
  • Send specimen frozen, on ice.

Transport Temperature: Frozen


Specimen Stability

Note: To be delivered and remain on ice until testing performed.

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

0 – 60.0 µmol/L


Laboratory Critical Values Table

Performing Department


Performing Department Laboratory Location

Spectrum Health Regional Laboratory, Grand Rapids, MI
Spectrum Health Big Rapids Laboratory, Big Rapids, MI
Spectrum Health Blodgett Laboratory, Grand Rapids, MI
Spectrum Health Gerber Laboratory, Fremont, MI
Spectrum Health Kelsey Laboratory, Lakeview, MI
Spectrum Health Ludington Laboratory, Ludington, MI
Spectrum Health Pennock Laboratory, Hastings, MI
Spectrum Health Reed City Laboratory, Reed City, MI
Spectrum Health United Laboratory, Greenville, MI
Spectrum Health Zeeland Laboratory, Zeeland, MI


Enzymatic – UV



CDM Code


Epic Test ID


Interface Order Alias



Ammonia: 16362-6

Reviewed Date