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Test Code LAB47 Ammonia

Intended Use

Used for the quantitative determination in ammonia in human plasma to evaluate liver status.

Methodology

Enzymatic

Performing Laboratory

RCH-SPH

Specimen Requirements

Sample Type: Plasma (EDTA)

Container/Tube:  Lavender EDTA tube

Specimen Volume:  1.0 mL (minimum volume:  0.55 mL)

 

Collection Instructions: Collection tube should be completely filled and immediately placed on ice.. Avoid hemolysis. Separate from cells as soon as possible. Forward promptly.

  • Labs collecting outside of RCH or SPH: please separate EDTA plasma into aliquot tube with tight lid. Send by courier FROZEN to nearest performing site STAT.

 

Samples that will exceed 24 hours shipping time, please order the Ammonia Mayo test (requires frozen EDTA plasma processed within 2 hours of collection).

Specimen Stability

Frozen (< -20C) (preferred): 24 hours or one thaw cycle

Refrigerated: 1 hour

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82140