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Mayo Clinic Laboratories

Test Code NH3 Ammonia (NH3), Plasma

Additional Codes

LAB47

Methodology

Useful for detecting Reye’s syndrome and evaluating metabolism and progress of liver disease.

 

Performing Laboratory

St. Mary's Regional Medical Center-Chemistry

 

CPT: 82140

Specimen Requirements

Specimen must be tested within 30 minutes of draw.  Do NOT draw off-site.  Call the laboratory at 207-777-8400 prior to draw to notify Chemistry of specimen arrival.

 

Container/Tube: Light green (lithium heparin) or lavender (EDTA) tube

Specimen: 1 mL of plasma

Transport Temperature: Refrigerate

Collection Instructions: Tube must be kept on ice and delivered to laboratory as soon as  possible. Do not draw off-site.

Reference Values

0-19 years: <51 µmol/L

>20 years:  <33 µmol/L

Day(s) Test Set Up

Monday through Sunday

Available STAT